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82-822: In 1896, a group of citizens gathered at the Old Court House in Dayton, Ohio to create an organization dedicated to collecting and preserving the history of the Miami Valley. Their goal was to celebrate the city's centennial by saving and converting Newcom's Tavern , Dayton's oldest building (ca. 1796), into the community's first history museum . They called their organization the Dayton Historical Society. The society remained headquartered in Newcom's Tavern for seventy-five years. Newcom's Tavern

164-617: A logistics hub. The city is home to Wright-Patterson Air Force Base , a significant contributor to research and development in the industrial, aeronautical , and astronautical engineering fields. Along with defense and aerospace, healthcare accounts for much of the Dayton area's economy. Significant institutions in Dayton include the Air Force Institute of Technology , Carillon Historical Park , Dayton Art Institute , Dayton Performing Arts Alliance , National Museum of

246-482: A controlled amount of the substance. Francesco Lana de Terzi measured the pressure of air at sea level and in 1670 proposed the first scientifically credible lifting medium in the form of hollow metal spheres from which all the air had been pumped out. These would be lighter than the displaced air and able to lift an airship . His proposed methods of controlling height are still in use today; by carrying ballast which may be dropped overboard to gain height, and by venting

328-474: A four-person screw-type helicopter, have severe flaws. He did at least understand that "An object offers as much resistance to the air as the air does to the object." ( Newton would not publish the Third law of motion until 1687.) His analysis led to the realisation that manpower alone was not sufficient for sustained flight, and his later designs included a mechanical power source such as a spring. Da Vinci's work

410-604: A lifting gas, though practical demonstration awaited a gas-tight balloon material. On hearing of the Montgolfier Brothers' invitation, the French Academy member Jacques Charles offered a similar demonstration of a hydrogen balloon. Charles and two craftsmen, the Robert brothers, developed a gas-tight material of rubberised silk for the envelope. The hydrogen gas was to be generated by chemical reaction during

492-436: A male householder with no spouse present, and 38.2% had a female householder with no spouse present. 47.4% of all households were made up of individuals, and 14.6% were someone living alone who was 65 years of age or older. The average household size was 1.95, and the average family size was 2.83. 18.9% of the city's population were under the age of 18, 65.0% were 18 to 64, and 16.1% were 65 years of age or older. The median age

574-555: A manufacturing boom throughout the city, including high-demand for housing and other services. At one point, emergency housing was put into place due to a housing shortage in the region, much of which is still in use today. Alan Turing is widely considered to be the father of theoretical computer science and artificial intelligence. He visited the National Cash Register (NCR) company in Dayton in December 1942. He

656-454: A park. The Old Court House has been a favored political campaign stop. On September 17, 1859, Abraham Lincoln delivered an address on its steps. Eight other presidents have visited the courthouse, either as presidents or during presidential campaigns: Andrew Johnson , James Garfield , John F. Kennedy , Lyndon B. Johnson , Richard Nixon , Gerald Ford , Ronald Reagan , and Bill Clinton . The Dayton Arcade , which opened on March 3, 1904,

738-545: A part of the local industry that was expanding rapidly. Advancements in architecture also contributed to the suburban boom. New, modernized shopping centers and the Interstate Highway System allowed workers to commute greater distances and families to live further from the downtown area. More than 127,000 homes were built in Montgomery County during the 1950s. During this time, the city was

820-463: A restaurant or a shopping center downtown, people crowded around, saying that they were praying for us. Warren Christopher was given at least one standing ovation in a restaurant. Families on the airbase placed "candles of peace" in their front windows, and people gathered in peace vigils outside the base. One day they formed a "peace chain," although it was not large enough to surround the sprawling eight-thousand-acre base. Ohio's famous ethnic diversity

902-576: Is a city in Montgomery and Greene counties in the U.S. state of Ohio . As of the 2020 census , the city proper had a population of 137,644, making it the sixth-most populous city in Ohio. It anchors the state's fourth-largest metropolitan area, the Dayton metropolitan area , which had 814,049 residents. Dayton is located within Ohio's Miami Valley region, 50 miles (80 km) north of Cincinnati and 60 miles (97 km) west of Columbus . It

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984-442: Is also a large area that encompasses several neighborhoods itself and has seen a recent uplift and revival. Dayton's suburbs with a population of 10,000 or more include Beavercreek , Centerville , Clayton , Englewood , Fairborn , Harrison Township , Huber Heights , Kettering , Miami Township , Miamisburg , Oakwood , Riverside , Springboro , Trotwood , Vandalia , Washington Township , West Carrollton , and Xenia . In

1066-418: Is formed entirely from propellants carried within the rocket before use. Rocket engines work by action and reaction . Rocket engines push rockets forwards simply by throwing their exhaust backwards extremely fast. Rockets for military and recreational uses date back to at least 13th-century China . Significant scientific, interplanetary and industrial use did not occur until the 20th century, when rocketry

1148-422: Is land and 0.85 square miles (2.20 km ) is water. Dayton's climate features warm, muggy summers and cold, dry winters, and is classified as a humid continental climate ( Köppen Dfa ). Unless otherwise noted, all normal figures quoted within the text below are from the official climatology station, Dayton International Airport, at an elevation of 1,000 ft (304.8 m) about 10 mi (16 km) to

1230-482: Is now located on the grounds of the Carillon Historical Park in Dayton. In 1968, the society's volunteers took a leadership role in the preservation of another outstanding Dayton landmark , the 1850 Montgomery County Courthouse , the nation's best surviving example of a Greek Revival style courthouse. The Dayton Historical Society became The Montgomery County Historical Society and relocated to

1312-491: Is sometimes used interchangeably with aeronautics, although "aeronautics" includes lighter-than-air craft such as airships , and includes ballistic vehicles while "aviation" technically does not. A significant part of aeronautical science is a branch of dynamics called aerodynamics , which deals with the motion of air and the way that it interacts with objects in motion, such as an aircraft. Attempts to fly without any real aeronautical understanding have been made from

1394-502: Is subject to severe weather typical of the Midwestern United States. Tornadoes are possible from the spring to the fall. Floods, blizzards, and severe thunderstorms can also occur. On Memorial Day of 2019, Dayton suffered extensive property damage and one death during a tornado outbreak , in which a total of 15 tornadoes touched down in the Dayton area. Although some of the tornadoes were only EF0 and remained on

1476-571: Is the county seat of Montgomery County. Dayton was founded in 1796 along the Great Miami River and named after Jonathan Dayton , a Founding Father who owned a significant amount of land in the area. It grew in the 19th century as a canal town and was home to many patents and inventors , most notably the Wright brothers , who developed the first successful motor-operated airplane . It later developed an industrialized economy and

1558-421: Is the art or practice of aeronautics. Historically aviation meant only heavier-than-air flight, but nowadays it includes flying in balloons and airships. Aeronautical engineering covers the design and construction of aircraft, including how they are powered, how they are used and how they are controlled for safe operation. A major part of aeronautical engineering is aerodynamics , the science of passing through

1640-596: Is to be implemented through the year 2020. Dayton is known as the "Gem City". The nickname's origin is uncertain, but several theories exist. In the early 19th century, a well-known racehorse named Gem hailed from Dayton. In 1845, an article published in the Cincinnati Daily Chronicle by an author known as T stated: In a small bend of the Great Miami River, with canals on the east and south, it can be fairly said, without infringing on

1722-462: Is widely acknowledged as the founder of modern aeronautics. He was first called the "father of the aeroplane" in 1846 and Henson called him the "father of aerial navigation." He was the first true scientific aerial investigator to publish his work, which included for the first time the underlying principles and forces of flight. In 1809 he began the publication of a landmark three-part treatise titled "On Aerial Navigation" (1809–1810). In it he wrote

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1804-605: The CareSource Management Group finished construction of a $ 55 million corporate headquarters in downtown Dayton. The 300,000-square-foot (28,000 m ), 10-story building was downtown's first new office tower in more than a decade. Dayton's two tallest buildings are the Kettering Tower at 408 ft (124 m) and the KeyBank Tower at 385 ft (117 m). Kettering Tower

1886-586: The Dayton Agreement , a peace accord between the parties to the hostilities of the conflict in Bosnia-Herzegovina and the former Yugoslavia , was negotiated at Wright-Patterson Air Force Base , near Fairborn, Ohio, from November 1 to 21. Richard Holbrooke wrote about these events in his memoirs: There was also a real Dayton out there, a charming Ohio city, famous as the birthplace of the Wright brothers . Its citizens energized us from

1968-539: The Great Blizzard of 1899 . On average, there are 14 days of 90 °F (32 °C)+ highs and 4.5 nights of sub-0 °F (−18 °C) lows annually. Snow is moderate, with a normal seasonal accumulation of 23.3 in (59 cm), usually occurring from November to March, occasionally April, and rarely October. Precipitation averages 41.1 inches (1,040 mm) annually, with total rainfall peaking in May. Dayton

2050-484: The National Park Service , citing information from the U.S. Patent Office , Dayton had granted more patents per capita than any other U.S. city in 1890 and ranked fifth in the nation as early as 1870. The Wright brothers , inventors of the airplane, and Charles F. Kettering , world-renowned for his numerous inventions, hailed from Dayton. The city was also home to James Ritty 's Incorruptible Cashier,

2132-461: The Rozière. The principle was to use the hydrogen section for constant lift and to navigate vertically by heating and allowing to cool the hot air section, in order to catch the most favourable wind at whatever altitude it was blowing. The balloon envelope was made of goldbeater's skin . The first flight ended in disaster and the approach has seldom been used since. Sir George Cayley (1773–1857)

2214-724: The Schuster Center , opened in 2003. A large health network in the region, Premier Health Partners , expanded its Miami Valley Hospital with a 12-story tower addition. In 2010, the Downtown Dayton Partnership, in cooperation with the City of Dayton and community leaders, introduced the Greater Downtown Dayton Plan. It focuses on job creation and retention, infrastructure improvements, housing, recreation, and collaboration. The plan

2296-407: The "flying man". He was the first person to make well-documented, repeated, successful flights with gliders , therefore making the idea of " heavier than air " a reality. Newspapers and magazines published photographs of Lilienthal gliding, favourably influencing public and scientific opinion about the possibility of flying machines becoming practical. His work lead to him developing the concept of

2378-488: The 1800s. Innovation led to business growth in the region. In 1884, John Henry Patterson acquired James Ritty's National Manufacturing Company along with his cash register patents and formed the National Cash Register Company (NCR). The company manufactured the first mechanical cash registers and played a crucial role in the shaping of Dayton's reputation as an epicenter for manufacturing in

2460-685: The Army purchased 40 acres adjacent to Huffman Prairie for the Fairfield Aviation General Supply Depot. As airplanes developed more capability, they needed more runway space than McCook could offer, and a new location was sought. The Patterson family formed the Dayton Air Service Committee, Inc which held a campaign that raised $ 425,000 in two days and purchased 4,520.47 acres (18.2937 km ) northeast of Dayton, including Wilbur Wright Field and

2542-408: The Dayton area: downy woodpecker , Carolina chickadee , tufted titmouse , brown creeper , cardinal , junco , tree sparrow , song sparrow and crow . Unlike many Midwestern cities its age, Dayton has very broad and straight downtown streets (generally two or three full lanes in each direction) that improved access to the downtown even after the automobile became popular. The main reason for

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2624-872: The Dayton-Wright Airplane Company in Moraine and established a flying field. Deeds also opened a field to the north in the flood plain of the Great Miami River between the confluences of that river, the Stillwater River, and the Mad River, near downtown Dayton. Later named McCook Field for Alexander McDowell McCook, an American Civil War general, this became the Army Signal Corps' primary aviation research and training location. Wilbur Wright also purchased land near Huffman prairie to continue their research. During World War I,

2706-693: The Huffman Prairie Flying Field. Wright Field was "formally dedicated" on October 12, 1927. After World War II, Wright Field and the adjacent Patterson Field, Dayton Army Air Field, and Clinton Army Air Field were merged as the Headquarters, Air Force Technical Base. On January 13, 1948, the facility was renamed Wright-Patterson Air Force Base . A catastrophic flood in March 1913, known as the Great Dayton Flood , led to

2788-518: The Italian explorer Marco Polo described the Chinese techniques then current. The Chinese also constructed small hot air balloons, or lanterns, and rotary-wing toys. An early European to provide any scientific discussion of flight was Roger Bacon , who described principles of operation for the lighter-than-air balloon and the flapping-wing ornithopter , which he envisaged would be constructed in

2870-481: The Ohio Valley's history. Two other groups traveling overland arrived several days later. The oldest surviving building is Newcom Tavern , which was used for various purposes, including housing Dayton's first church , which is still in existence. In 1797, Daniel C. Cooper laid out Mad River Road , the first overland connection between Cincinnati and Dayton, opening the "Mad River Country" to settlement. Ohio

2952-491: The Old Court House. In 1977, the City of Dayton asked the society to provide management and museum services for the 1816 Patterson Homestead (Rubicon Farm) , home of Dayton's prominent Patterson family and birthplace of John H. Patterson , founder of the National Cash Register Company (now NCR Corporation) . Today, the Patterson Homestead is used for educational programming on life in early Dayton. In 1998,

3034-604: The United States Air Force , and University of Dayton . Dayton was founded on April 1, 1796, by 12 settlers known as the Thompson Party. They traveled in March from Cincinnati up the Great Miami River by pirogue and landed at what is now St. Clair Street, where they found two small camps of Native Americans . Among the Thompson Party was Benjamin Van Cleve, whose memoirs provide insights into

3116-537: The Wrights returned to Dayton and continued testing at nearby Huffman Prairie . Additionally, Dayton is colloquially referred to as "Little Detroit". This nickname comes from Dayton's prominence as a Midwestern manufacturing center. According to the United States Census Bureau , the city has a total area of 56.50 square miles (146.33 km ), of which 55.65 square miles (144.13 km )

3198-405: The air becomes compressed, typically at speeds above Mach 1. Transonic flow occurs in the intermediate speed range around Mach 1, where the airflow over an object may be locally subsonic at one point and locally supersonic at another. A rocket or rocket vehicle is a missile , spacecraft, aircraft or other vehicle which obtains thrust from a rocket engine . In all rockets, the exhaust

3280-544: The air. With the increasing activity in space flight, nowadays aeronautics and astronautics are often combined as aerospace engineering . The science of aerodynamics deals with the motion of air and the way that it interacts with objects in motion, such as an aircraft. The study of aerodynamics falls broadly into three areas: Incompressible flow occurs where the air simply moves to avoid objects, typically at subsonic speeds below that of sound (Mach 1). Compressible flow occurs where shock waves appear at points where

3362-558: The annual, hemisphere-wide Christmas Bird Count . The Chapter began participation in the National Count in 1924. The local Count was initially coordinated by Ben Blincoe, who was succeeded by Jim Hill in 1970. In the mid-1960s, the freezing of Lake Erie and associated marshlands led species of waterfowl to appear in the Dayton-area, where surface waters remained unfrozen. Nine varieties of birds have been observed every year in

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3444-488: The broad streets was that Dayton was a marketing and shipping center from its beginning; streets were broad to enable wagons drawn by teams of three to four pairs of oxen to turn around. Also, some of today's streets were once barge canals flanked by draw-paths. A courthouse building was built in downtown Dayton in 1888 to supplement Dayton's original Neoclassical courthouse, which still stands. This second, "new" courthouse has since been replaced with new facilities as well as

3526-715: The city's rental vacancy rate and thus increase the occupancy rate. Dayton's ten historic neighborhoods— Oregon District , Wright Dunbar , Dayton View , Grafton Hill , McPherson Town , Webster Station , Huffman , Kenilworth , St. Anne's Hill , and South Park —feature mostly single-family houses and mansions in the Neoclassical, Jacobethan , Tudor Revival , English Gothic , Chateauesque , Craftsman , Queen Anne , Georgian Revival , Colonial Revival , Renaissance Revival Architecture, Shingle Style Architecture, Prairie , Mission Revival , Eastlake/Italianate , American Foursquare , and Federal styles. Downtown Dayton

3608-567: The creation of the Miami Conservancy District , a series of dams as well as hydraulic pumps installed around Dayton, in 1914. Like other cities across the country, Dayton was heavily involved in the war effort during World War II. Several locations around the city hosted the Dayton Project , a branch of the larger Manhattan Project , to develop polonium triggers used in early atomic bombs. The war efforts led to

3690-612: The earliest times, typically by constructing wings and jumping from a tower with crippling or lethal results. Wiser investigators sought to gain some rational understanding through the study of bird flight. Medieval Islamic Golden Age scientists such as Abbas ibn Firnas also made such studies. The founders of modern aeronautics, Leonardo da Vinci in the Renaissance and Cayley in 1799, both began their investigations with studies of bird flight. Man-carrying kites are believed to have been used extensively in ancient China. In 1282

3772-527: The early 1900s. In 1906, Charles F. Kettering , a leading engineer at the company, helped develop the first electric cash register, which propelled NCR into the national spotlight. NCR also helped develop the US Navy Bombe , a code-breaking machine that helped crack the Enigma machine cipher during World War II . Dayton has been the home for many patents and inventions since the 1870s. According to

3854-458: The federal government's National Urban Policy and New Community Development Act of 1970 , funding was provided for thirteen "new towns" or planned cities throughout the country. One location was set to become a suburb of Dayton and was known variously as Brookwood or Newfields. The goal was to have an entirely new suburb that would eventually house about 35,000 residents. The new town was to be located between Trotwood and Brookville, and modeled on

3936-475: The filling process. The Montgolfier designs had several shortcomings, not least the need for dry weather and a tendency for sparks from the fire to set light to the paper balloon. The manned design had a gallery around the base of the balloon rather than the hanging basket of the first, unmanned design, which brought the paper closer to the fire. On their free flight, De Rozier and d'Arlandes took buckets of water and sponges to douse these fires as they arose. On

4018-479: The first flight was in Kitty Hawk, North Carolina , their Wright Flyer was built in and returned to Dayton for improvements and further flights at Huffman Field , a cow pasture eight miles (13 km) northeast of Dayton, near the current Wright-Patterson Air Force Base. When the government tried to move development to Langley field in southern Virginia, six Dayton businessmen including Edward A. Deeds, formed

4100-452: The first mechanical cash register, and Arthur E. Morgan 's hydraulic jump, a flood prevention mechanism that helped pioneer hydraulic engineering . Paul Laurence Dunbar , an African-American poet and novelist, penned his most famous works in the late 19th century and became an integral part of the city's history. Powered aviation began in Dayton. Orville and Wilbur Wright were the first to construct and demonstrate powered flight. Although

4182-413: The first scientific statement of the problem, "The whole problem is confined within these limits, viz. to make a surface support a given weight by the application of power to the resistance of air." He identified the four vector forces that influence an aircraft: thrust , lift , drag and weight and distinguished stability and control in his designs. He developed the modern conventional form of

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4264-476: The fixed-wing aeroplane having a stabilising tail with both horizontal and vertical surfaces, flying gliders both unmanned and manned. He introduced the use of the whirling arm test rig to investigate the aerodynamics of flight, using it to discover the benefits of the curved or cambered aerofoil over the flat wing he had used for his first glider. He also identified and described the importance of dihedral , diagonal bracing and drag reduction, and contributed to

4346-563: The following excerpt: She shall ever claim our duty, For she shines—the brightest gem That has ever decked with beauty      Dear Ohio's diadem. Dayton also plays a role in a nickname given to the state of Ohio, "Birthplace of Aviation." Dayton is the hometown of the Wright brothers , aviation pioneers who are credited with inventing and building the first practical airplane in history. After their first manned flights in Kitty Hawk, North Carolina , which they had chosen due to its ideal weather and climate conditions,

4428-434: The future. The lifting medium for his balloon would be an "aether" whose composition he did not know. In the late fifteenth century, Leonardo da Vinci followed up his study of birds with designs for some of the earliest flying machines, including the flapping-wing ornithopter and the rotating-wing helicopter . Although his designs were rational, they were not based on particularly good science. Many of his designs, such as

4510-400: The gas contained in a second, inner ballonet. On 19 September 1784, it completed the first flight of over 100 km, between Paris and Beuvry , despite the man-powered propulsive devices proving useless. In an attempt the next year to provide both endurance and controllability, de Rozier developed a balloon having both hot air and hydrogen gas bags, a design which was soon named after him as

4592-634: The ground for less than a mile, one was an EF4 measuring a half-mile-wide (805 meters), which tore through the communities of Brookville, Trotwood, Dayton, Northridge, and Riverside. Several streets were closed, including portions of I-75 and North Dixie Drive in Northridge. 64,000 residents lost power and much of the region's water supply was cut off. The Dayton Audubon Society is the National Audubon Society 's local chapter. The Dayton chapter manages local activities contributing to

4674-418: The ideas of Ian McHarg . The project was abandoned in 1978 and most of the land became Sycamore State Park . Dayton's city proper population declined significantly from a peak of 262,332 residents in 1960 to 137,644 residents in 2020. This was in part due to the slowdown of the region's manufacturing sector. The metropolitan area as a whole has experienced both population growth and decreases since 1960, with

4756-522: The lifting containers to lose height. In practice de Terzi's spheres would have collapsed under air pressure, and further developments had to wait for more practicable lifting gases. From the mid-18th century the Montgolfier brothers in France began experimenting with balloons. Their balloons were made of paper, and early experiments using steam as the lifting gas were short-lived due to its effect on

4838-517: The loss of manufacturing jobs and decentralization of metropolitan areas, as well as the national housing crisis that began in 2008. While much of the state has suffered for similar reasons, the impact on Dayton has been greater than most. Dayton had the third-greatest percentage loss of population in the state since the 1980s, behind Cleveland and Youngstown. Despite this, Dayton has begun diversifying its workforce from manufacturing into other growing sectors such as healthcare and education. In 1995,

4920-760: The modern wing. His flight attempts in Berlin in the year 1891 are seen as the beginning of human flight and the " Lilienthal Normalsegelapparat " is considered to be the first air plane in series production, making the Maschinenfabrik Otto Lilienthal in Berlin the first air plane production company in the world. Otto Lilienthal is often referred to as either the "father of aviation" or "father of flight". Other important investigators included Horatio Phillips . Aeronautics may be divided into three main branches, Aviation , Aeronautical science and Aeronautical engineering . Aviation

5002-606: The north of downtown Dayton, which lies within the valley of the Miami River ; thus temperatures there are typically cooler than in downtown. At the airport, monthly mean temperatures range from 27.5 °F (−2.5 °C) in January to 74.1 °F (23.4 °C) in July. The highest temperature ever recorded in Dayton was 108 °F (42 °C) on July 22, 1901, and the coldest was −28 °F (−33 °C) on February 13 during

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5084-536: The other hand, the manned design of Charles was essentially modern. As a result of these exploits, the hot air balloon became known as the Montgolfière type and the gas balloon the Charlière . Charles and the Robert brothers' next balloon, La Caroline , was a Charlière that followed Jean Baptiste Meusnier 's proposals for an elongated dirigible balloon, and was notable for having an outer envelope with

5166-429: The outset. Unlike the population of, say, New York City, Geneva or Washington , which would scarcely notice another conference, Daytonians were proud to be part of history. Large signs at the commercial airport hailed Dayton as the "temporary center of international peace." The local newspapers and television stations covered the story from every angle, drawing the people deeper into the proceedings. When we ventured into

5248-408: The overall trend leaning towards growth for the metro area. The city's most populous ethnic group, white, declined from 78.1% in 1960 to 51.7% by 2010. As of the census of 2020, there were 137,644 people living in the city, for a population density of 2,466.47 people per square mile (952.31/km ). There were 68,899 housing units. The racial makeup of the city (including Hispanics in the racial counts)

5330-500: The paper as it condensed. Mistaking smoke for a kind of steam, they began filling their balloons with hot smoky air which they called "electric smoke" and, despite not fully understanding the principles at work, made some successful launches and in 1783 were invited to give a demonstration to the French Académie des Sciences . Meanwhile, the discovery of hydrogen led Joseph Black in c.  1780 to propose its use as

5412-588: The population were employed, and 24.4% had a bachelor's degree or higher. As of the 2010 census, there were 141,759 people, 58,404 households, and 31,064 families residing in the city. The population density was 2,543.2 inhabitants per square mile (981.9/km ). There were 74,065 housing units at an average density of 1,330.9 per square mile (513.9/km ). The racial makeup of the city was 51.7% White , 42.9% African American , 0.3% Native American , 0.9% Asian , 1.3% from other races , and 2.9% from two or more races. Hispanic or Latino residents of any race were 3.0% of

5494-441: The population. There were 58,404 households, of which 28.3% had children under the age of 18 living with them, 25.9% were married couples living together, 21.4% had a female householder with no husband present, 5.9% had a male householder with no wife present, and 46.8% were non-families. 38.8% of all households were made up of individuals, and 11.2% had someone living alone who was 65 years of age or older. The average household size

5576-513: The rights of others, that Dayton is the gem of all our interior towns. It possesses wealth, refinement, enterprise, and a beautiful country, beautifully developed. In the late 1840s, Major William D. Bickham of the Dayton Journal began a campaign to nickname Dayton the "Gem City." The name was adopted by the city's Board of Trade several years later. Paul Laurence Dunbar referred to the nickname in his poem, "Toast to Dayton", as noted in

5658-412: The site of several race riots, including one in 1955 following the murder of Emmett Till , the 1966 Dayton race riot , two in 1967 (following a speech by civil rights activist H. Rap Brown and another following the police killing of an African American man), and one in 1968 as part of the nationwide King assassination riots . Since the 1980s, however, Dayton's population has declined, mainly due to

5740-613: The society began management of the NCR Archive , a collection of over three million historic documents, photographs, and objects of local, national and international significance, making the society one of the largest historical organizations in the Midwest . The new Miami Valley History Research Center, featuring the NCR Archive, opened in Dayton in 2001. Dayton, Ohio Dayton ( / ˈ d eɪ t ən / )

5822-410: The understanding and design of ornithopters and parachutes . Another significant invention was the tension-spoked wheel, which he devised in order to create a light, strong wheel for aircraft undercarriage. During the 19th century Cayley's ideas were refined, proved and expanded on, culminating in the works of Otto Lilienthal . Lilienthal was a German engineer and businessman who became known as

5904-468: Was 2.26, and the average family size was 3.03. Aeronautics Aeronautics is the science or art involved with the study, design , and manufacturing of air flight -capable machines, and the techniques of operating aircraft and rockets within the atmosphere . While the term originally referred solely to operating the aircraft, it has since been expanded to include technology, business, and other aspects related to aircraft. The term " aviation "

5986-422: Was 38.4. For every 100 females, there were 101.5 males. According to the U.S. Census American Community Survey , for the period 2016-2020 the estimated median annual income for a household in the city was $ 43,780, and the median income for a family was $ 60,408. About 25.4% of the population were living below the poverty line , including 39.5% of those under age 18 and 21.5% of those age 65 or over. About 53.6% of

6068-415: Was 47.6% White , 40.7% Black or African American , 0.4% Native American , 1.4% Asian , 0.1% Pacific Islander , 3.3% from some other race , and 6.6% from two or more races. Separately, 5.7% of the population were Hispanic or Latino of any race. There were 63,308 households, out of which 22.1% had children under the age of 18 living with them, 24.5% were married couples living together, 30.9% had

6150-417: Was able to show that it was not necessary to build 336 Bombes , so the initial order was scaled down to 96 machines to decipher German Enigma-machine-encrypted secret messages during World War II. Between the 1940s and the 1970s, the city saw significant growth in suburban areas from population migration. Veterans were returning from military service in large numbers seeking industrial and manufacturing jobs,

6232-688: Was admitted into the Union in 1803, and the village of Dayton was incorporated in 1805 and chartered as a city in 1841. The city was named after Jonathan Dayton , a captain in the American Revolutionary War who signed the U.S. Constitution and owned a significant amount of land in the area. In 1827, construction on the Dayton–Cincinnati canal began, which provided a better way to transport goods from Dayton to Cincinnati and contributed significantly to Dayton's economic growth during

6314-562: Was built in the hopes of replacing open-air markets throughout the city. Throughout the decades, the Arcade has gone through many transformations but has retained its charm. Some of its main features include a Flemish facade at the Third Street entrance, a glass dome above the Arcade rotunda, and a chateau roof line above the Third Street facade. The Dayton Arcade is currently under renovations with no official completion date set. In 2009,

6396-415: Was home to the Dayton Project , a branch of the larger Manhattan Project , to develop polonium triggers used in early atomic bombs. With the decline of heavy manufacturing in the late 20th century, Dayton's businesses have diversified into a service economy . Ohio's borders are within 500 miles (800 km) of roughly 60 percent of the country's population and manufacturing infrastructure, making Dayton

6478-443: Was lost after his death and did not reappear until it had been overtaken by the work of George Cayley . The modern era of lighter-than-air flight began early in the 17th century with Galileo 's experiments in which he showed that air has weight. Around 1650 Cyrano de Bergerac wrote some fantasy novels in which he described the principle of ascent using a substance (dew) he supposed to be lighter than air, and descending by releasing

6560-552: Was on display. Downtown expansion that began in the 2000s has helped revitalize the city and encourage growth. Day Air Ballpark , home of the Dayton Dragons , was built in 2000. The highly successful minor league baseball team has been an integral part of Dayton's culture. In 2001, the city's public park system, Five Rivers MetroParks , built RiverScape MetroPark, an outdoor entertainment venue that attracts more than 400,000 visitors each year. A new performance arts theater,

6642-486: Was originally Winters Tower, the headquarters of Winters Bank. The building was renamed after Virginia Kettering when Winters was merged into Bank One . KeyBank Tower was known as the MeadWestvaco Tower before KeyBank gained naming rights to the building in 2008. Ted Rall said in 2015 that over the last five decades Dayton has been demolishing some of its architecturally significant buildings to reduce

6724-586: Was the enabling technology of the Space Age , including setting foot on the Moon . Rockets are used for fireworks , weaponry, ejection seats , launch vehicles for artificial satellites , human spaceflight and exploration of other planets. While comparatively inefficient for low speed use, they are very lightweight and powerful, capable of generating large accelerations and of attaining extremely high speeds with reasonable efficiency. Chemical rockets are

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