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136-569: The MPPC was preceded by the Edison licensing system, in effect in 1907–1908, on which the MPPC was modeled. During the 1890s, Thomas Edison owned most of the major US patents relating to motion picture cameras. The Edison Manufacturing Company's patent lawsuits against each of its domestic competitors crippled the US film industry, reducing production mainly to two companies: Edison and Biograph, which used

272-475: A "chunk of it". The representatives decided to give a cubic foot of solid copper weighing 486 pounds with their gratitude inscribed on it in appreciation for his part in the "continuous stimulation in the copper industry". Edison is credited with designing and producing the first commercially available fluoroscope , a machine that uses X-rays to take radiographs . Until Edison discovered that calcium tungstate fluoroscopy screens produced brighter images than

408-401: A $ 50-a-week profit by age 13, most of which went to buying equipment for electrical and chemical experiments. At age 15, in 1862, he saved 3-year-old Jimmie MacKenzie from being struck by a runaway train. Jimmie's father, station agent J. U. MacKenzie of Mount Clemens, Michigan , was so grateful that he trained Edison as a telegraph operator. Edison's first telegraphy job away from Port Huron

544-540: A ball drive, gear drive, or impact mechanism. Rotors can be designed to rotate in a full or partial circle. Guns are similar to rotors, except that they generally operate at very high pressures of 275 to 900 kPa (40 to 130 psi) and flows of 3 to 76 L/s (50 to 1200 US gal/min), usually with nozzle diameters in the range of 10 to 50 mm (0.5 to 1.9 in). Guns are used not only for irrigation, but also for industrial applications such as dust suppression and logging . Sprinklers can also be mounted on moving platforms connected to

680-471: A bid. He was surprised to hear them offer $ 10,000 ($ 269,294 in 2023), which he gratefully accepted. The quadruplex telegraph was Edison's first big financial success, and Menlo Park became the first institution set up with the specific purpose of producing constant technological innovation and improvement. Edison was legally credited with most of the inventions produced there, though many employees carried out research and development under his direction. His staff

816-574: A businessman. Ultimately, his entrepreneurship was central to the formation of some 14 companies, including General Electric , formerly one of the largest publicly traded companies in the world. In 1866, at the age of 19, Edison moved to Louisville, Kentucky , where, as an employee of Western Union , he worked the Associated Press bureau news wire . Edison requested the night shift, which allowed him plenty of time to spend at his two favorite pastimes—reading and experimenting. Eventually,

952-463: A chemistry course at The Cooper Union for the Advancement of Science and Art to support his work on a new telegraphy system with Charles Batchelor . This appears to have been his only enrollment in courses at an institution of higher learning. Thomas Edison began his career as a news butcher , selling newspapers, candy, and vegetables on trains running from Port Huron to Detroit. He turned

1088-436: A child, he became fascinated with technology and spent hours working on experiments at home. Edison developed hearing problems at the age of 12. The cause of his deafness has been attributed to a bout of scarlet fever during childhood and recurring untreated middle-ear infections . He subsequently concocted elaborate fictitious stories about the cause of his deafness. He was completely deaf in one ear and barely hearing in

1224-419: A circular or semi-circular pattern. Traveling Sprinklers: These move along the hose path on their own, watering as they go, ideal for covering long, narrow spaces. Each type offers different advantages based on garden size and shape, water pressure, and specific watering needs. Subirrigation has been used for many years in field crops in areas with high water tables . It is a method of artificially raising

1360-589: A clock or timer. Most automatic systems employ electric solenoid valves . Each zone has one or more of these valves that are wired to the controller. When the controller sends power to the valve, the valve opens, allowing water to flow to the sprinklers in that zone. There are two main types of sprinklers used in lawn irrigation, pop-up spray heads and rotors. Spray heads have a fixed spray pattern, while rotors have one or more streams that rotate. Spray heads are used to cover smaller areas, while rotors are used for larger areas. Golf course rotors are sometimes so large that

1496-582: A coiled platinum filament but the high cost of platinum kept the bulb from becoming a commercial success. Many other inventors had also devised incandescent lamps, including Alessandro Volta 's demonstration of a glowing wire in 1800 and inventions by Henry Woodward and Mathew Evans . Others who developed early and commercially impractical incandescent electric lamps included Humphry Davy , James Bowman Lindsay , Moses G. Farmer , William E. Sawyer , Joseph Swan , and Heinrich Göbel . These early bulbs all had flaws such as an extremely short life and requiring

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1632-688: A commercially viable electric light bulb on October 21, 1879, Edison developed an electric " utility " to compete with the existing gas light utilities. On December 17, 1880, he founded the Edison Illuminating Company , and during the 1880s, he patented a system for electricity distribution . The company established the first investor-owned electric utility. On September 4, 1882, in Pearl Street , New York City, his 600 kW cogeneration steam-powered generating station, Pearl Street Station 's, electrical power distribution system

1768-426: A computerized set of valves . In sprinkler or overhead irrigation, water is piped to one or more central locations within the field and distributed by overhead high-pressure sprinklers or guns. A system using sprinklers, sprays, or guns mounted overhead on permanently installed risers is often referred to as a solid-set irrigation system. Higher pressure sprinklers that rotate are called rotors and are driven by

1904-492: A different camera design. This left Edison's other rivals with little recourse but to import French and British films. Since 1902, Edison had also been notifying distributors and exhibitors that if they did not use Edison machines and films exclusively, they would be subject to litigation for supporting filmmaking that infringed Edison's patents. Exhausted by the lawsuits, Edison's competitors — Essanay, Kalem, Pathé Frères, Selig, and Vitagraph — approached him in 1907 to negotiate

2040-494: A direct financial cost to the farmer. Irrigation often requires pumping energy (either electricity or fossil fuel) to deliver water to the field or supply the correct operating pressure. Hence increased efficiency will reduce both the water cost and energy cost per unit of agricultural production. A reduction of water use on one field may mean that the farmer is able to irrigate a larger area of land, increasing total agricultural production. Low efficiency usually means that excess water

2176-521: A draftsman and an expert witness in patent litigation, began working for the United States Electric Lighting Company run by Edison's rival Hiram S. Maxim . While working for Maxim, Latimer invented a process for making carbon filaments for light bulbs and helped install broad-scale lighting systems for New York City, Philadelphia, Montreal, and London. Latimer holds the patent for the electric lamp issued in 1881, and

2312-416: A flood (spate), water is diverted to normally dry river beds (wadis) using a network of dams, gates and channels and spread over large areas. The moisture stored in the soil will be used thereafter to grow crops. Spate irrigation areas are in particular located in semi-arid or arid, mountainous regions. Micro-irrigation , sometimes called localized irrigation , low volume irrigation , or trickle irrigation

2448-493: A grooved cylinder. Despite its limited sound quality and that the recordings could be played only a few times, the phonograph made Edison a celebrity. Joseph Henry , president of the National Academy of Sciences and one of the most renowned electrical scientists in the US, described Edison as "the most ingenious inventor in this country... or in any other". In April 1878, Edison traveled to Washington to demonstrate

2584-402: A high electric current to operate which made them difficult to apply on a large scale commercially. In his first attempts to solve these problems, Edison tried using a filament made of cardboard, carbonized with compressed lampblack. This burnt out too quickly to provide lasting light. He then experimented with different grasses and canes such as hemp, and palmetto, before settling on bamboo as

2720-409: A higher profit than potatoes. The land is flood irrigated twice a day to simulate tidal flooding; the water is pumped from the sea using wind power. Additional benefits are soil remediation and carbon sequestration . Until the 1960s, there were fewer than half the number of people on the planet as of 2024. People were not as wealthy as today, consumed fewer calories and ate less meat , so less water

2856-417: A key aspect of agriculture for over 5,000 years and has been developed by many cultures around the world. Irrigation helps to grow crops, maintain landscapes, and revegetate disturbed soils in dry areas and during times of below-average rainfall. In addition to these uses, irrigation is also employed to protect crops from frost , suppress weed growth in grain fields, and prevent soil consolidation . It

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2992-738: A laboratory in West Orange, New Jersey , that featured the world's first film studio , the Black Maria . With 1,093 US patents in his name , as well as patents in other countries, Edison is regarded as the most prolific inventor in American history. Edison married twice and fathered six children. He died in 1931 due to complications from diabetes . Thomas Edison was born in 1847 in Milan, Ohio , but grew up in Port Huron, Michigan , after

3128-415: A large part of the market without electrical service. AC companies expanded into this gap. Edison expressed views that AC was unworkable and the high voltages used were dangerous. As George Westinghouse installed his first AC systems in 1886, Thomas Edison struck out personally against his chief rival stating, " Just as certain as death, Westinghouse will kill a customer within six months after he puts in

3264-465: A licensing agreement, which Lubin was also invited to join. The one notable filmmaker excluded from the licensing agreement was Biograph, which Edison hoped to squeeze out of the market. No further applicants could become licensees. The purpose of the licensing agreement, according to an Edison lawyer, was to "preserve the business of present manufacturers and not to throw the field open to all competitors." In February 1909, major European producers held

3400-561: A number of nearby private dwellings, but was shut down in September 1886 as uneconomic, since he was unable to extend the premises. On January 19, 1883, the first standardized incandescent electric lighting system employing overhead wires began service in Roselle, New Jersey . As Edison expanded his direct current (DC) power delivery system, he received stiff competition from companies installing alternating current (AC) systems. From

3536-424: A rectangular or square pattern. They are good for covering large, flat areas evenly. Impact (or Pulsating) Sprinklers: These create a rotating, pulsating spray, which can cover a circular or semi-circular area. They are useful for watering large lawns. Stationary Sprinklers: These have a fixed spray pattern and are best for smaller areas or gardens. Rotary Sprinklers: These use spinning arms to distribute water in

3672-708: A result of irrigation and the subsequent effects on natural and social conditions in river basins and downstream of an irrigation scheme . The effects stem from the altered hydrological conditions caused by the installation and operation of the irrigation scheme. Amongst some of these problems is depletion of underground aquifers through overdrafting . Soil can be over-irrigated due to poor distribution uniformity or management wastes water, chemicals, and may lead to water pollution . Over-irrigation can cause deep drainage from rising water tables that can lead to problems of irrigation salinity requiring watertable control by some form of subsurface land drainage . In 2000,

3808-552: A second patent for the "process of manufacturing carbons" (the filament used in incandescent light bulbs), issued in 1882. On October 8, 1883, the US patent office ruled that Edison's patent was based on the work of William E. Sawyer and was, therefore, invalid. Litigation continued for nearly six years. In 1885, Latimer switched camps and started working with Edison. On October 6, 1889, a judge ruled that Edison's electric light improvement claim for "a filament of carbon of high resistance"

3944-424: A single sprinkler is combined with a valve and called a 'valve in head'. When used in a turf area, the sprinklers are installed with the top of the head flush with the ground surface. When the system is pressurized, the head will pop up out of the ground and water the desired area until the valve closes and shuts off that zone. Once there is no more pressure in the lateral line, the sprinkler head will retract back into

4080-466: A system of any size. He has got a new thing and it will require a great deal of experimenting to get it working practically. " Many reasons have been suggested for Edison's anti-AC stance. One notion is that the inventor could not grasp the more abstract theories behind AC and was trying to avoid developing a system he did not understand. Edison also appeared to have been worried about the high voltage from misinstalled AC systems killing customers and hurting

4216-399: Is supplementary to rainfall as happens in many parts of the world, or whether it is ' full irrigation' whereby crops rarely depend on any contribution from rainfall. Full irrigation is less common and only happens in arid landscapes experiencing very low rainfall or when crops are grown in semi-arid areas outside of any rainy seasons. Surface irrigation, also known as gravity irrigation, is

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4352-480: Is a form of sprinkler irrigation utilising several segments of pipe (usually galvanized steel or aluminium) joined and supported by trusses , mounted on wheeled towers with sprinklers positioned along its length. The system moves in a circular pattern and is fed with water from the pivot point at the center of the arc. These systems are found and used in all parts of the world and allow irrigation of all types of terrain. Newer systems have drop sprinkler heads as shown in

4488-503: Is a system where water is distributed under low pressure through a piped network, in a pre-determined pattern, and applied as a small discharge to each plant or adjacent to it. Traditional drip irrigation use individual emitters, subsurface drip irrigation (SDI), micro-spray or micro-sprinklers, and mini-bubbler irrigation all belong to this category of irrigation methods. Drip irrigation, also known as microirrigation or trickle irrigation, functions as its name suggests. In this system, water

4624-415: Is also the means of delivery of fertilizer. The process is known as fertigation . Deep percolation, where water moves below the root zone, can occur if a drip system is operated for too long or if the delivery rate is too high. Drip irrigation methods range from very high-tech and computerized to low-tech and labor-intensive. Lower water pressures are usually needed than for most other types of systems, with

4760-502: Is also used to cool livestock , reduce dust , dispose of sewage , and support mining operations. Drainage , which involves the removal of surface and sub-surface water from a given location, is often studied in conjunction with irrigation. There are several methods of irrigation that differ in how water is supplied to plants. Surface irrigation , also known as gravity irrigation, is the oldest form of irrigation and has been in use for thousands of years. In sprinkler irrigation , water

4896-422: Is common in many parts of the world as rainfed agriculture , or it can be full irrigation, where crops rarely rely on any contribution from rainfall. Full irrigation is less common and only occurs in arid landscapes with very low rainfall or when crops are grown in semi-arid areas outside of rainy seasons. The environmental effects of irrigation relate to the changes in quantity and quality of soil and water as

5032-422: Is delivered at or near the root zone of plants, one drop at a time. This method can be the most water-efficient method of irrigation, if managed properly; evaporation and runoff are minimized. The field water efficiency of drip irrigation is typically in the range of 80 to 90% when managed correctly. In modern agriculture, drip irrigation is often combined with plastic mulch , further reducing evaporation, and

5168-457: Is dependent upon farmers having sufficient access to water. However, water scarcity is already a critical constraint to farming in many parts of the world. There are several methods of irrigation. They vary in how the water is supplied to the plants. The goal is to apply the water to the plants as uniformly as possible, so that each plant has the amount of water it needs, neither too much nor too little. Irrigation can also be understood whether it

5304-424: Is less expensive to install than a center pivot, but much more labor-intensive to operate – it does not travel automatically across the field: it applies water in a stationary strip, must be drained, and then rolled to a new strip. Most systems use 100 or 130 mm (4 or 5 inch) diameter aluminum pipe. The pipe doubles both as water transport and as an axle for rotating all the wheels. A drive system (often found near

5440-598: Is notably the first US patent for an electronic device due to its use of an Edison effect bulb as an active component . Subsequent scientists studied, applied, and eventually evolved the bulbs into vacuum tubes , a core component of early analog and digital electronics of the 20th century. In 1878, Edison formed the Edison Electric Light Company in New York City with several financiers, including J. P. Morgan , Spencer Trask , and

5576-582: Is now the Czech Republic), opened in 1882, and was the first public building in the world to use Edison's electric lamps. Francis Jehl , Edison's assistant in the invention of the lamp, supervised the installation. In September 2010, a sculpture of three giant light bulbs was erected in Brno, in front of the theater. The first Edison light bulbs in the Nordic countries were installed at the weaving hall of

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5712-421: Is often no alternative for farmers but to use water polluted with urban waste directly to water their crops. There can be significant health hazards related to using untreated wastewater in agriculture. Municipal wastewater can contain a mixture of chemical and biological pollutants. In low-income countries, there are often high levels of pathogens from excreta. In emerging nations , where industrial development

5848-443: Is often the irrigation choice for developing nations, for low value crops and for large fields. Where water levels from the irrigation source permit, the levels are controlled by dikes ( levees ), usually plugged by soil. This is often seen in terraced rice fields (rice paddies), where the method is used to flood or control the level of water in each distinct field. In some cases, the water is pumped, or lifted by human or animal power to

5984-422: Is outpacing environmental regulation, there are increasing risks from inorganic and organic chemicals. The World Health Organization developed guidelines for safe use of wastewater in 2006, advocating a ‘multiple-barrier' approach wastewater use, for example by encouraging farmers to adopt various risk-reducing behaviors. These include ceasing irrigation a few days before harvesting to allow pathogens to die off in

6120-537: Is piped to one or more central locations within the field and distributed by overhead high-pressure water devices. Micro-irrigation is a system that distributes water under low pressure through a piped network and applies it as a small discharge to each plant. Micro-irrigation uses less pressure and water flow than sprinkler irrigation. Drip irrigation delivers water directly to the root zone of plants. Subirrigation has been used in field crops in areas with high water tables for many years. It involves artificially raising

6256-586: Is practiced in the vineyards at Lanzarote using stones to condense water. Fog collectors are also made of canvas or foil sheets. Using condensate from air conditioning units as a water source is also becoming more popular in large urban areas. As of November 2019 a Glasgow-based startup has helped a farmer in Scotland to establish edible saltmarsh crops irrigated with sea water. An acre of previously marginal land has been put under cultivation to grow samphire , sea blite , and sea aster ; these plants yield

6392-500: Is registered on 1,093 patents. Edison began his career as an inventor in Newark, New Jersey , with the automatic repeater and his other improved telegraphic devices, but the invention that first gained him wider notice was the phonograph in 1877. This accomplishment was so unexpected by the public at large as to appear almost magical. Edison became known as "The Wizard of Menlo Park". His first phonograph recorded on tinfoil around

6528-478: Is similar in principle and action to subsurface basin irrigation. Another type of subirrigation is the self-watering container, also known as a sub-irrigated planter . This consists of a planter suspended over a reservoir with some type of wicking material such as a polyester rope. The water is drawn up the wick through capillary action. A similar technique is the wicking bed ; this too uses capillary action. Modern irrigation methods are efficient enough to supply

6664-437: Is supplied at one end using a large hose. After sufficient irrigation has been applied to one strip of the field, the hose is removed, the water drained from the system, and the assembly rolled either by hand or with a purpose-built mechanism, so that the sprinklers are moved to a different position across the field. The hose is reconnected. The process is repeated in a pattern until the whole field has been irrigated. This system

6800-583: Is used for irrigation in agriculture, the nutrient (nitrogen and phosphorus) content of the treated wastewater has the benefit of acting as a fertilizer . This can make the reuse of excreta contained in sewage attractive. In developing countries , agriculture is increasingly using untreated municipal wastewater for irrigation – often in an unsafe manner. Cities provide lucrative markets for fresh produce, so they are attractive to farmers. However, because agriculture has to compete for increasingly scarce water resources with industry and municipal users, there

6936-556: Is usually not considered as a form of irrigation. Rainwater harvesting is the collection of runoff water from roofs or unused land and the concentration of this. Irrigation with recycled municipal wastewater can also serve to fertilize plants if it contains nutrients, such as nitrogen, phosphorus and potassium. There are benefits of using recycled water for irrigation, including the lower cost compared to some other sources and consistency of supply regardless of season, climatic conditions and associated water restrictions. When reclaimed water

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7072-586: The Columbia . Although hesitant at first, Edison agreed to Villard's request. Most of the work was completed in May 1880, and the Columbia went to New York City, where Edison and his personnel installed Columbia 's new lighting system. The Columbia was Edison's first commercial application for his incandescent light bulb. The Edison equipment was removed from Columbia in 1895. In 1880, Lewis Latimer ,

7208-530: The 1st Middlesex Militia during the War of 1812. His father, Samuel Edison Jr. moved to Vienna, Ontario , and fled to Ohio after his involvement in the Rebellion of 1837 . Edison was taught reading, writing, and arithmetic by his mother, a former school teacher. He attended school for only a few months. However, one biographer described him as a very curious child who learned most things by reading on his own. As

7344-595: The American Midwest . Early in his career he worked as a telegraph operator , which inspired some of his earliest inventions. In 1876, he established his first laboratory facility in Menlo Park, New Jersey , where many of his early inventions were developed. He later established a botanical laboratory in Fort Myers, Florida , in collaboration with businessmen Henry Ford and Harvey S. Firestone , and

7480-794: The Finlayson 's textile factory in Tampere, Finland in March 1882. In 1901, Edison attended the Pan-American Exposition in Buffalo, New York . His company, the Edison Manufacturing Company , was given the task of installing the electric lights on the various buildings and structures that were built for the exposition. At night Edison made a panorama photograph of the illuminated buildings. After devising

7616-511: The Latham loop , and three to projectors. The MPPC eliminated the outright sale of films to distributors and exhibitors, replacing it with rentals, which allowed quality control over prints that had formerly been exhibited long past their prime. The trust also established a uniform rental rate for all licensed films, thereby removing price as a factor for the exhibitor in film selection, in favor of selection made on quality, which in turn encouraged

7752-535: The Paris Film Congress in an attempt to create a similar European organisation. This group also included MPPC members Pathé and Vitagraph, which had extensive European production and distribution interests. This proposed European cartel ultimately failed when Pathé, then still the largest company in the world, withdrew in April. Biograph retaliated for being frozen out of the trust agreement by purchasing

7888-535: The Thomson-Houston Electric Company of Lynn, Massachusetts (another AC-based competitor) built 22 power stations. Parallel to expanding competition between Edison and the AC companies was rising public furor over a series of deaths in the spring of 1888 caused by pole mounted high voltage alternating current lines. This turned into a media frenzy against high voltage alternating current and

8024-577: The United States , China , and European countries like the United Kingdom , also fund and organize some schemes within other nations. By 2021 the global land area equipped for irrigation reached 352 million ha, an increase of 22% from the 289 million ha of 2000 and more than twice the 1960s land area equipped for irrigation. The vast majority is located in Asia (70%), where irrigation

8160-573: The commercial greenhouse production, usually for potted plants . Water is delivered from below, absorbed by upwards, and the excess collected for recycling. Typically, a solution of water and nutrients floods a container or flows through a trough for a short period of time, 10–20 minutes, and is then pumped back into a holding tank for reuse. Sub-irrigation in greenhouses requires fairly sophisticated, expensive equipment and management. Advantages are water and nutrient conservation, and labor savings through reduced system maintenance and automation . It

8296-412: The phonograph , the motion picture camera , and early versions of the electric light bulb , have had a widespread impact on the modern industrialized world . He was one of the first inventors to apply the principles of organized science and teamwork to the process of invention, working with many researchers and employees. He established the first industrial research laboratory . Edison was raised in

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8432-407: The 1880s that used wax-coated cardboard cylinders. In 1876, Edison began work to improve the microphone for telephones (at that time called a "transmitter") by developing a carbon microphone , which consists of two metal plates separated by granules of carbon that would change resistance with the pressure of sound waves. A steady direct current is passed between the plates through the granules and

8568-609: The 1889 merger that formed Edison General Electric. In 1890 he told president Henry Villard he thought it was time to retire from the lighting business and moved on to an iron ore refining project that preoccupied his time. Edison's dogmatic anti-AC values were no longer controlling the company. By 1889 Edison's Electric's own subsidiaries were lobbying to add AC power transmission to their systems and in October 1890 Edison Machine Works began developing AC-based equipment. Cut-throat competition and patent battles were bleeding off cash in

8704-536: The European market, which played a much more significant part of the revenue and profit for MPPC members than for the independents, which concentrated on Westerns produced for a primarily US market. The end came with a federal court decision in United States v. Motion Picture Patents Co. on October 1, 1915, which ruled that the MPPC's acts went "far beyond what was necessary to protect the use of patents or

8840-475: The Goldenrod plant. Edison decided on Solidago leavenworthii , also known as Leavenworth's Goldenrod. The plant, which normally grows roughly 3–4 feet tall with a 5% latex yield, was adapted by Edison through cross-breeding to produce plants twice the size and with a latex yield of 12%. During the 1911 New York Electrical show, Edison told representatives of the copper industry it was a shame he did not have

8976-514: The MPPC ended in September 1913 with the expiration of the last of the patents filed in the mid-1890s at the dawn of commercial film production and exhibition. Thus the MPPC lost the ability to control the American film industry through patent licensing and had to rely instead on its subsidiary, the General Film Company , formed in 1910, which monopolized film distribution in US. The outbreak of World War I in 1914 cut off most of

9112-535: The MPPC to allow Kodak, which led the industry in quality and price, to sell its raw film stock to unlicensed independents. The number of theaters exhibiting independent films grew by 33 percent within twelve months, to half of all houses. Another reason was the MPPC's overestimation of the efficiency of controlling the motion picture industry through patent litigation and the exclusion of independents from licensing. The slow process of using detectives to investigate patent infringements, and of obtaining injunctions against

9248-760: The Nile river in Egypt and Sudan; and in the Mississippi-Missouri river basin, the Southern Great Plains, and in parts of California in the United States. Smaller irrigation areas are spread across almost all populated parts of the world. By 2012, the area of irrigated land had increased to an estimated total of 3,242,917 km (801 million acres), which is nearly the size of India. The irrigation of 20% of farming land accounts for

9384-634: The US electrical business and would compete with Westinghouse for the AC market. Edison served as a figurehead on the company's board of directors for a few years before selling his shares. Edison moved from Menlo Park after the death of his first wife, Mary, in 1884, and purchased a home known as " Glenmont " in 1886 as a wedding gift for his second wife, Mina , in Llewellyn Park in West Orange, New Jersey . In 1885, Thomas Edison bought 13 acres of property in Fort Myers , Florida, for roughly $ 2,750 (equivalent to $ 93,256 in 2023) and built what

9520-476: The ability to offer motion picture shooting scenes set in deserts, jungles and great mountains. Hollywood had one additional advantage: if a non-licensed studio was sued, it was only a hundred miles to "run for the border" and get out of the US to Mexico, where the trust's patents were not in effect and thus equipment could not be seized. The reasons for the MPPC's decline are manifold. The first blow came in 1911 when Eastman Kodak modified its exclusive contract with

9656-424: The barium platinocyanide screens originally used by Wilhelm Röntgen , the technology was capable of producing only very faint images. The fundamental design of Edison's fluoroscope is still in use today, although Edison abandoned the project after nearly losing his own eyesight and seriously injuring his assistant, Clarence Dally . Dally made himself an enthusiastic human guinea pig for the fluoroscopy project and

9792-409: The best filament. Edison continued trying to improve this design and on November 4, 1879, filed for U.S. patent 223,898 (granted on January 27, 1880) for an electric lamp using "a carbon filament or strip coiled and connected to platina contact wires". The patent described several ways of creating the carbon filament including "cotton and linen thread, wood splints, papers coiled in various ways". It

9928-469: The center pivot. This type of system is known as LEPA (Low Energy Precision Application). Originally, most center pivots were water-powered. These were replaced by hydraulic systems ( T-L Irrigation ) and electric-motor-driven systems (Reinke, Valley, Zimmatic). Many modern pivots feature GPS devices. A series of pipes, each with a wheel of about 1.5 m diameter permanently affixed to its midpoint, and sprinklers along its length, are coupled together. Water

10064-485: The centre of the wheel line) rotates the clamped-together pipe sections as a single axle, rolling the whole wheel line. Manual adjustment of individual wheel positions may be necessary if the system becomes misaligned. Wheel line systems are limited in the amount of water they can carry, and limited in the height of crops that can be irrigated. One useful feature of a lateral move system is that it consists of sections that can be easily disconnected, adapting to field shape as

10200-428: The competing companies and the idea of a merger was being put forward in financial circles. The War of Currents ended in 1892 when the financier J.P. Morgan engineered a merger of Edison General Electric with its main alternating current based rival, The Thomson-Houston Company, that put the board of Thomson-Houston in charge of the new company called General Electric . General Electric now controlled three-quarters of

10336-711: The components of these irrigation systems are hidden under ground, since aesthetics are important in a landscape. A typical lawn sprinkler system will consist of one or more zones, limited in size by the capacity of the water source. Each zone will cover a designated portion of the landscape. Sections of the landscape will usually be divided by microclimate , type of plant material, and type of irrigation equipment. A landscape irrigation system may also include zones containing drip irrigation, bubblers, or other types of equipment besides sprinklers. Although manual systems are still used, most lawn sprinkler systems may be operated automatically using an irrigation controller , sometimes called

10472-591: The cost of interior furnishings. Edison and Mina spent many winters at their home in Fort Myers, and Edison tried to find a domestic source of natural rubber. Due to the security concerns around World War I , Edison suggested forming a science and industry committee to provide advice and research to the US military, and he headed the Naval Consulting Board in 1915. Edison became concerned with America's reliance on foreign supply of rubber and

10608-436: The critical parameters of his electric lighting system including lamp resistance by an analysis of Ohm's law , Joule's law and economics. Nearly all of Edison's patents were utility patents, which were protected for 17 years and included inventions or processes that are electrical, mechanical, or chemical in nature. About a dozen were design patents , which protect an ornamental design for up to 14 years. As in most patents,

10744-408: The crop or field requirements. Increasing the application efficiency means that the amount of crop produced per unit of water increases. Improved efficiency may either be achieved by applying less water to an existing field or by using water more wisely thereby achieving higher yields in the same area of land. In some parts of the world, farmers are charged for irrigation water hence over-application has

10880-630: The domestic marketplace, responded to the creation of the MPPC by moving their operations to Hollywood , whose distance from Edison's home base of New Jersey made it more difficult for the MPPC to enforce its patents. The Ninth Circuit Court of Appeals , which is headquartered in San Francisco , California , and covers the area, was averse to enforcing patent claims. Southern California was also chosen because of its beautiful year-round weather and varied countryside; its topography , semi-arid climate and widespread irrigation gave its landscapes

11016-539: The early 1880s, AC arc lighting systems for streets and large spaces had been an expanding business in the US. With the development of transformers in Europe and by Westinghouse Electric in the US in 1885–1886, it became possible to transmit AC long distances over thinner and cheaper wires, and "step down" (reduce) the voltage at the destination for distribution to users. This allowed AC to be used in street lighting and in lighting for small business and domestic customers,

11152-410: The entire field uniformly with water, so that each plant has the amount of water it needs, neither too much nor too little. Water use efficiency in the field can be determined as follows: Increased irrigation efficiency has a number of positive outcomes for the farmer, the community and the wider environment. Low application efficiency infers that the amount of water applied to the field is in excess of

11288-502: The exception of low-energy center pivot systems and surface irrigation systems, and the system can be designed for uniformity throughout a field or for precise water delivery to individual plants in a landscape containing a mix of plant species. Although it is difficult to regulate pressure on steep slopes, pressure compensating emitters are available, so the field does not have to be level. High-tech solutions involve precisely calibrated emitters located along lines of tubing that extend from

11424-667: The family moved there in 1854. He was the seventh and last child of Samuel Ogden Edison Jr. (1804–1896, born in Marshalltown, Nova Scotia ) and Nancy Matthews Elliott (1810–1871, born in Chenango County, New York ). His patrilineal family line was Dutch by way of New Jersey ; the surname had originally been "Edeson". His great-grandfather, loyalist John Edeson, fled New Jersey for Nova Scotia in 1784. The family moved to Middlesex County, Upper Canada , around 1811, and his grandfather, Capt. Samuel Edison Sr. served with

11560-534: The ground. In flower beds or shrub areas, sprinklers may be mounted on above ground risers or even taller pop-up sprinklers may be used and installed flush as in a lawn area. Hose-end sprinklers are devices attached to the end of a garden hose, used for watering lawns, gardens, or plants. They come in a variety of designs and styles, allowing you to adjust the water flow, pattern, and range for efficient irrigation. Some common types of hose-end sprinklers include: Oscillating Sprinklers: These spray water back and forth in

11696-409: The image that follows. As of 2017 most center pivot systems have drops hanging from a U-shaped pipe attached at the top of the pipe with sprinkler heads that are positioned a few feet (at most) above the crop, thus limiting evaporative losses. Drops can also be used with drag hoses or bubblers that deposit the water directly on the ground between crops. Crops are often planted in a circle to conform to

11832-482: The incandescent electric lamp and was put in charge of tests and records on that device. In 1880, he was appointed chief engineer of the Edison Lamp Works. In his first year, the plant under general manager Francis Robbins Upton turned out 50,000 lamps. According to Edison, Hammer was "a pioneer of incandescent electric lighting". Frank J. Sprague , a competent mathematician and former naval officer ,

11968-487: The infringers, was outpaced by the dynamic rise of new companies in diverse locations. Despite the rise in popularity of feature films in 1912–1913 from independent producers and foreign imports, the MPPC was very reluctant to make the changes necessary to distribute such longer films. Edison, Biograph, Essanay, and Vitagraph did not release their first features until 1914, after dozens, if not hundreds, of feature films, had been released by independents. Patent royalties to

12104-408: The inventions he described were improvements over prior art . The phonograph patent, in contrast, was unprecedented in describing the first device to record and reproduce sounds. In just over a decade, Edison's Menlo Park laboratory had expanded to occupy two city blocks. Edison said he wanted the lab to have "a stock of almost every conceivable material". A newspaper article printed in 1887 reveals

12240-490: The irrigation results in flooding or near flooding of the cultivated land. Historically, surface irrigation is the most common method of irrigating agricultural land across most parts of the world. The water application efficiency of surface irrigation is typically lower than other forms of irrigation, due in part to the lack of control of applied depths. Surface irrigation involves a significantly lower capital cost and energy requirement than pressurised irrigation systems. Hence it

12376-498: The latter preoccupation cost him his job. One night in 1867, he was working with a lead–acid battery when he spilt sulfuric acid onto the floor. It ran between the floorboards and onto his boss's desk below. The next morning Edison was fired. His first patent was for the electric vote recorder, U.S. patent 90,646 , which was granted on June 1, 1869. Finding little demand for the machine, Edison moved to New York City shortly thereafter. One of his mentors during those early years

12512-399: The level of the land. Surface irrigation is even used to water urban gardens in certain areas, for example, in and around Phoenix, Arizona . The irrigated area is surrounded by a berm and the water is delivered according to a schedule set by a local irrigation district . A special form of irrigation using surface water is spate irrigation , also called floodwater harvesting. In case of

12648-441: The line is moved. They are most often used for small, rectilinear, or oddly-shaped fields, hilly or mountainous regions, or in regions where labor is inexpensive. A lawn sprinkler system is permanently installed, as opposed to a hose-end sprinkler, which is portable. Sprinkler systems are installed in residential lawns, in commercial landscapes, for churches and schools, in public parks and cemeteries, and on golf courses . Most of

12784-440: The list goes on. Over his desk Edison displayed a placard with Sir Joshua Reynolds ' famous quotation: "There is no expedient to which a man will not resort to avoid the real labor of thinking." This slogan was reputedly posted at several other locations throughout the facility. In Menlo Park, Edison had created the first industrial laboratory concerned with creating knowledge and then controlling its application. Edison's name

12920-468: The market Edison's patented low voltage DC incandescent lamp system was designed to supply. Edison's DC empire suffered from one of its chief drawbacks: it was suitable only for the high density of customers found in large cities. Edison's DC plants could not deliver electricity to customers more than one mile from the plant, and left a patchwork of unsupplied customers between plants. Small cities and rural areas could not afford an Edison style system, leaving

13056-680: The members of the Vanderbilt family . Edison made the first public demonstration of his incandescent light bulb on December 31, 1879, in Menlo Park. It was during this time that he said: "We will make electricity so cheap that only the rich will burn candles." Henry Villard , president of the Oregon Railroad and Navigation Company , attended Edison's 1879 demonstration. Villard was impressed and requested Edison install his electric lighting system aboard Villard's company's new steamer,

13192-604: The monopoly which went with them" and was, therefore, an illegal restraint of trade under the Sherman Antitrust Act . An appellate court dismissed the MPPC's appeal, and officially terminated the company in 1918. Thomas Edison Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman. He developed many devices in fields such as electric power generation , mass communication , sound recording , and motion pictures. These inventions, which include

13328-435: The oldest form of irrigation and has been in use for thousands of years. In surface ( furrow, flood , or level basin ) irrigation systems, water moves across the surface of agricultural lands, in order to wet it and infiltrate into the soil. Water moves by following gravity or the slope of the land. Surface irrigation can be subdivided into furrow, border strip or basin irrigation . It is often called flood irrigation when

13464-422: The other. It is alleged that Edison would listen to a music player or piano by clamping his teeth into the wood to absorb the sound waves into his skull. As he got older, Edison believed his hearing loss allowed him to avoid distraction and concentrate more easily on his work. Modern-day historians and medical professionals have suggested he may have had ADHD . It is known that early in his career he enrolled in

13600-436: The overarching goal of increasing self-sufficiency. Irrigation water can come from groundwater (extracted from springs or by using wells ), from surface water (withdrawn from rivers , lakes or reservoirs ) or from non-conventional sources like treated wastewater , desalinated water , drainage water , or fog collection . While floodwater harvesting belongs to the accepted irrigation methods, rainwater harvesting

13736-463: The patent to the Latham film loop , a key feature of virtually all motion picture cameras then in use. Edison sued to gain control of the patent. After a federal court upheld the validity of the patent in 1907, Edison began negotiation with Biograph in May 1908 to reorganize the Edison licensing system. The resulting trust pooled 16 motion picture patents. Ten were considered of minor importance. The remaining six pertained one each to films, cameras, and

13872-423: The phonograph before the National Academy of Sciences, Congressmen, Senators and President Hayes . The Washington Post described Edison as a " genius " and his presentation as "a scene... that will live in history". Although Edison obtained a patent for the phonograph in 1878, he did little to develop it until Alexander Graham Bell , Chichester Bell , and Charles Tainter produced a phonograph-like device in

14008-426: The physics of loose-contact carbon transmitters (work that Hughes did not bother to patent). Edison used the carbon microphone concept in 1877 to create an improved telephone for Western Union . In 1886, Edison found a way to improve a Bell Telephone microphone, one that used loose-contact ground carbon, with his discovery that it worked far better if the carbon was roasted . This type was put in use in 1890 and

14144-567: The production of 40% of food production. The scale of irrigation increased dramatically over the 20th century. In 1800, 8 million hectares globally were irrigated, in 1950, 94 million hectares, and in 1990, 235 million hectares. By 1990, 30% of the global food production came from irrigated land. Irrigation techniques across the globe includes canals redirecting surface water, groundwater pumping, and diverting water from dams. National governments lead most irrigation schemes within their borders, but private investors and other nations, especially

14280-437: The project, while Edison did all the research. Edison, however, wished to contribute $ 25,000 as well. Edison did the majority of the research and planting, sending results and sample rubber residues to his West Orange Lab. Edison employed a two-part Acid-base extraction , to derive latex from the plant material after it was dried and crushed to a powder. After testing 17,000 plant samples, he eventually found an adequate source in

14416-475: The regions saw increases in the area equipped for irrigation, with Africa growing the fastest (+29%), followed by Asia (+25%), Oceania (+24%), the Americas (+19%) and Europe (+2%). Irrigation enables the production of more crops, especially commodity crops in areas which otherwise could not support them. Countries frequently invested in irrigation to increase wheat , rice , or cotton production, often with

14552-428: The sales of electric power systems in general. The primary reason was that Edison Electric based their design on low voltage DC, and switching a standard after they had installed over 100 systems was, in Edison's mind, out of the question. By the end of 1887, Edison Electric was losing market share to Westinghouse, who had built 68 AC-based power stations to Edison's 121 DC-based stations. To make matters worse for Edison,

14688-452: The seemingly greedy and callous lighting companies that used it. Edison took advantage of the public perception of AC as dangerous, and joined with self-styled New York anti-AC crusader Harold P. Brown in a propaganda campaign, aiding Brown in the public electrocution of animals with AC, and supported legislation to control and severely limit AC installations and voltages (to the point of making it an ineffective power delivery system) in what

14824-457: The seriousness of his claim, stating the lab contained "eight thousand kinds of chemicals, every kind of screw made, every size of needle, every kind of cord or wire, hair of humans, horses, hogs, cows, rabbits, goats, minx, camels ... silk in every texture, cocoons, various kinds of hoofs, shark's teeth, deer horns, tortoise shell ... cork, resin, varnish and oil, ostrich feathers, a peacock's tail, jet, amber, rubber, all ores ..." and

14960-434: The signal so generated to the telephone line. Edison was one of many inventors working on the problem of creating a usable microphone for telephony by having it modulate an electric current passed through it. His work was concurrent with Emile Berliner 's loose-contact carbon transmitter (who lost a later patent case against Edison over the carbon transmitter's invention ) and David Edward Hughes ’ study and published paper on

15096-400: The sprinkler arrives back at the reel the system shuts off. This type of system is known to most people as a "waterreel" traveling irrigation sprinkler and they are used extensively for dust suppression, irrigation, and land application of waste water. Other travelers use a flat rubber hose that is dragged along behind while the sprinkler platform is pulled by a cable. Center pivot irrigation

15232-493: The sunlight; applying water carefully so it does not contaminate leaves likely to be eaten raw; cleaning vegetables with disinfectant; or allowing fecal sludge used in farming to dry before being used as a human manure. Irrigation water can also come from non-conventional sources like treated wastewater , desalinated water , drainage water , or fog collection . In countries where humid air sweeps through at night, water can be obtained by condensation onto cold surfaces. This

15368-759: The total fertile land was 2,788,000 km (689 million acres) and it was equipped with irrigation infrastructure worldwide. About 68% of this area is in Asia, 17% in the Americas, 9% in Europe, 5% in Africa and 1% in Oceania. The largest contiguous areas of high irrigation density are found in Northern and Eastern India and Pakistan along the Ganges and Indus rivers; in the Hai He, Huang He and Yangtze basins in China; along

15504-467: The trust to make licensing agreements with distributors and theaters – and thus determine who screened their films and where. The patents owned by the MPPC allowed them to use federal law enforcement officials to enforce their licensing agreements and to prevent unauthorized use of their cameras, films, projectors, and other equipment. In some cases, the MPPC made use of hired thugs and mob connections to violently disrupt productions that were not licensed by

15640-412: The trust. The MPPC also strictly regulated the production content of their films, primarily as a means of cost control. Films were initially limited to one reel in length (13–17 minutes), although competition by independent and foreign producers by 1912 led to the introduction of two-reelers, and by 1913, three and four-reelers. Many independent filmmakers, who controlled from one-quarter to one-third of

15776-400: The upgrading of production values. The MPPC also established a monopoly on all aspects of filmmaking. Eastman Kodak owned the patent on raw film stock, and the company was a member of the trust and thus agreed to sell stock only to other members. Likewise, the trust's control of patents on motion picture cameras ensured that only MPPC studios were able to film, and the projector patents allowed

15912-417: The varying resistance results in a modulation of the current, creating a varying electric current that reproduces the varying pressure of the sound wave. Up to that point, microphones, such as the ones developed by Johann Philipp Reis and Alexander Graham Bell , worked by generating a weak current. The carbon microphone works by modulating a direct current and, subsequently, using a transformer to transfer

16048-405: The water source by a hose. Automatically moving wheeled systems known as traveling sprinklers may irrigate areas such as small farms, sports fields, parks, pastures, and cemeteries unattended. Most of these use a length of polyethylene tubing wound on a steel drum. As the tubing is wound on the drum powered by the irrigation water or a small gas engine, the sprinkler is pulled across the field. When

16184-414: The water table to allow the soil to be moistened from below the plants' root zone. Often those systems are located on permanent grasslands in lowlands or river valleys and combined with drainage infrastructure. A system of pumping stations, canals, weirs and gates allows it to increase or decrease the water level in a network of ditches and thereby control the water table. Subirrigation is also used in

16320-404: The water table to moisten the soil below the root zone of plants. Irrigation water can come from groundwater (extracted from springs or by using wells ), from surface water (withdrawn from rivers , lakes or reservoirs ) or from non-conventional sources like treated wastewater , desalinated water , drainage water , or fog collection . Irrigation can be supplementary to rainfall , which

16456-627: Was a fellow telegrapher and inventor named Franklin Leonard Pope , who allowed the impoverished youth to live and work in the basement of his Elizabeth, New Jersey , home, while Edison worked for Samuel Laws at the Gold Indicator Company. Pope and Edison founded their own company in October 1869, working as electrical engineers and inventors. Edison began developing a multiplex telegraphic system, which could send two messages simultaneously, in 1874. Edison's major innovation

16592-413: Was a key component of the green revolution; the Americas account for 16% and Europe for 8% of the world total. India (76 million ha) and China (75 million ha) have the largest equipped area for irrigation, far ahead of the United States o fAmerica (27 million ha). China and India also have the largest net gains in equipped area between 2000 and 2020 (+21 million ha for China and +15 million ha for India). All

16728-681: Was at Stratford Junction, Ontario, on the Grand Trunk Railway . He also studied qualitative analysis and conducted chemical experiments until he left the job rather than be fired after being held responsible for a near collision of two trains. Edison obtained the exclusive right to sell newspapers on the road, and, with the aid of four assistants, he set in type and printed the Grand Trunk Herald , which he sold with his other papers. This began Edison's long streak of entrepreneurial ventures, as he discovered his talents as

16864-521: Was determined to find a native supply of rubber. Edison's work on rubber took place largely at his research laboratory in Fort Myers, which has been designated as a National Historic Chemical Landmark. The laboratory was built after Thomas Edison, Henry Ford, and Harvey S. Firestone pulled together $ 75,000 to form the Edison Botanical Research Corporation. Initially, only Ford and Firestone were to contribute funds to

17000-467: Was exposed to a poisonous dose of radiation; he later died (at the age of 39) of injuries related to the exposure, including mediastinal cancer. In 1903, a shaken Edison said: "Don't talk to me about X-rays, I am afraid of them." Nonetheless, his work was important in the development of a technology still used today. Edison invented a highly sensitive device, that he named the tasimeter , which measured infrared radiation . His impetus for its creation

17136-511: Was generally told to carry out his directions in conducting research, and he drove them hard to produce results. William Joseph Hammer , a consulting electrical engineer , started working for Edison and began his duties as a laboratory assistant in December 1879. He assisted in experiments on the telephone, phonograph, electric railway, iron ore separator , electric lighting , and other developing inventions. However, Hammer worked primarily on

17272-634: Was later called Seminole Lodge as a winter retreat. The main house and guest house are representative of Italianate architecture and Queen Anne style architecture . The building materials were pre-cut in New England by the Kennebec Framing Company and the Stephen Nye Lumber Company of Fairfield Maine. The materials were then shipped down by boat and were constructed at a cost of $ 12,000 each, which included

17408-666: Was needed to produce their food. They required a third of the volume of water humans presently take from rivers. Today, the competition for water resources is much more intense, because there are now more than seven billion people on the planet, increasing the likelihood of overconsumption of food produced by water-thirsty animal agriculture and intensive farming practices. This creates increasing competition for water from industry , urbanisation and biofuel crops . Farmers will have to strive to increase productivity to meet growing demands for food , while industry and cities find ways to use water more efficiently. Successful agriculture

17544-476: Was not until several months after the patent was granted that Edison and his team discovered that a carbonized bamboo filament could last over 1,200 hours. Attempts to prevent blackening of the bulb due to emission of charged carbon from the hot filament culminated in Edison effect bulbs, which redirected and controlled the mysterious unidirectional current. Edison's 1883 patent for voltage-regulating

17680-563: Was now being referred to as a " war of the currents ". The development of the electric chair was used in an attempt to portray AC as having a greater lethal potential than DC and smear Westinghouse, via Edison colluding with Brown and Westinghouse's chief AC rival, the Thomson-Houston Electric Company, to ensure the first electric chair was powered by a Westinghouse AC generator. Edison was becoming marginalized in his own company having lost majority control in

17816-495: Was recruited by Edward H. Johnson and joined the Edison organization in 1883. One of Sprague's contributions to the Edison Laboratory at Menlo Park was to expand Edison's mathematical methods. Despite the common belief that Edison did not use mathematics, analysis of his notebooks reveal that he was an astute user of mathematical analysis conducted by his assistants such as Francis Robbins Upton, for example, determining

17952-580: Was switched on, providing 110 volts direct current (DC), initially to 59 customers in lower Manhattan , quickly growing to 508 customers with 10,164 lamps. The power station was decommissioned in 1895. Eight months earlier in January 1882, to demonstrate feasibility, Edison had switched on the 93 kW first steam-generating power station at Holborn Viaduct in London. This was a smaller 110 V DC supply system, eventually supplying 3,000 street lights and

18088-430: Was the desire to measure the heat from the solar corona during the total Solar eclipse of July 29, 1878 . The device was not patented since Edison could find no practical mass-market application for it. Irrigation Irrigation (also referred to as watering of plants ) is the practice of applying controlled amounts of water to land to help grow crops , landscape plants , and lawns . Irrigation has been

18224-488: Was the establishment of an industrial research lab in 1876. It was built in Menlo Park , a part of Raritan Township (now named Edison Township in his honor) in Middlesex County, New Jersey , with the funds from the sale of Edison's quadruplex telegraph . After his demonstration of the telegraph, Edison was not sure that his original plan to sell it for $ 4,000 to $ 5,000 was right, so he asked Western Union to make

18360-527: Was used in all telephones along with the Bell receiver until the 1980s. In 1878, Edison began working on a system of electrical illumination, something he hoped could compete with gas and oil-based lighting. He began by tackling the problem of creating a long-lasting incandescent lamp, something that would be needed for indoor use. However, Thomas Edison did not invent the light bulb. In 1840, British scientist Warren de la Rue developed an efficient light bulb using

18496-515: Was valid. To avoid a possible court battle with yet another competitor, Joseph Swan , who held an 1880 British patent on a similar incandescent electric lamp, he and Swan formed a joint company called Ediswan to manufacture and market the invention in Britain. The incandescent light bulb patented by Edison also began to gain widespread popularity in Europe as well. Mahen Theatre in Brno (in what

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