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108-420: A tool is an object that can extend an individual's ability to modify features of the surrounding environment or help them accomplish a particular task. Although many animals use simple tools , only human beings, whose use of stone tools dates back hundreds of millennia, have been observed using tools to make other tools. Early human tools, made of such materials as stone , bone , and wood , were used for

216-405: A cloud , a human body , a banana , a billiard ball, a table, or a proton . This is contrasted with abstract objects such as mental objects , which exist in the mental world , and mathematical objects . Other examples that are not physical bodies are emotions , the concept of " justice ", a feeling of hatred, or the number "3". In some philosophies, like the idealism of George Berkeley ,

324-402: A particle , several interacting smaller bodies ( particulate or otherwise). Discrete objects are in contrast to continuous media . The common conception of physical objects includes that they have extension in the physical world , although there do exist theories of quantum physics and cosmology which arguably challenge this. In modern physics, "extension" is understood in terms of

432-511: A "Birth Choice tool": The tool encourages women to consider out-of-hospital settings where appropriate, and the idea of a "toolkit" is used by the International Labour Organization to describe a set of processes applicable to improving global labour relations . A telephone is a communication tool that interfaces between two people engaged in conversation at one level. It also interfaces between each user and

540-495: A 2010 study suggests the hominin species Australopithecus afarensis ate meat by carving animal carcasses with stone implements. This finding pushes back the earliest known use of stone tools among hominins to about 3.4 million years ago. Finds of actual tools date back at least 2.6 million years in Ethiopia . One of the earliest distinguishable stone tool forms is the hand axe . Up until recently, weapons found in digs were

648-452: A 30 cm (1 ft) shaft and a larger, broader blade one foot (0.3m) long. This weapon is otherwise known as the iklwa or ixwa , after the sound that was heard as it was withdrawn from the victim's wound. The traditional spear was not abandoned, but was used to range attack enemy formations before closing in for close quarters battle with the iklwa. This tactical combination originated during Shaka's military reforms . This weapon

756-644: A change in the environment, thereby facilitating one's achievement of a target goal. Anthropologists believe that the use of tools was an important step in the evolution of mankind . Because tools are used extensively by both humans (Homo sapiens) and wild chimpanzees , it is widely assumed that the first routine use of tools took place prior to the divergence between the two ape species. These early tools, however, were likely made of perishable materials such as sticks, or consisted of unmodified stones that cannot be distinguished from other stones as tools. Stone artifacts date back to about 2.5 million years ago. However,

864-469: A cheap tool could be used to occupy the place of a missing mechanical part. A window roller in a car could be replaced with pliers . A transmission shifter or ignition switch would be able to be replaced with a screwdriver. Again, these would be considered tools that are being used for their unintended purposes, substitution as makeshift. Tools such as a rotary tool would be considered the substitution "by-design", or "multi-purpose". This class of tools allows

972-797: A circular schiltron on the first day of the Battle of Bannockburn . However, the rectangular schiltron was much more common and was used by King Robert the Bruce on the second day of the Battle of Bannockburn and in the Battle of Old Byland when he defeated English armies. Throwing spears became rarer as the Middle Ages drew on, but survived in the hands of specialists such as the Catalan Almogavars . They were commonly used in Ireland until

1080-554: A clear difference remained between spears designed to be thrown and those designed to be used in hand-to-hand combat. By the Magdalenian period (c. 15,000–9500 BC), spear-throwers similar to the later atlatl were in use. The spear is the main weapon of the warriors of Homer 's Iliad . The use of both a single thrusting spear and two throwing spears are mentioned. It has been suggested that two styles of combat are being described; an early style, with thrusting spears, dating to

1188-425: A collection of sub objects, down to an infinitesimal division, which interact with each other by forces that may be described internally by pressure and mechanical stress . In quantum mechanics an object is a particle or collection of particles. Until measured, a particle does not have a physical position. A particle is defined by a probability distribution of finding the particle at a particular position. There

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1296-635: A defensive block. When men on horses tried to get by these blocks, they would often be killed by the spears that could poke through the shield walls. Spears became more common than swords and axes because of how cheap, long, and fast spears were made. Broadly speaking, spears were either designed to be used in melee, or to be thrown. Within this simple classification, there was a remarkable range of types. For example, M. J. Swanton identified thirty different spearhead categories and sub-categories in early Saxon England. Most medieval spearheads were generally leaf-shaped. Notable types of early medieval spears include

1404-612: A diverse array of objects and materials, many of which are specifically chosen by certain birds for their unique qualities. Woodpecker finches insert twigs into trees in order to catch or impale larvae. Parrots may use tools to wedge nuts so that they can crack open the outer shell of nuts without launching away the inner contents. Some birds take advantage of human activity, such as carrion crows in Japan, which drop nuts in front of cars to crack them open. Several species of fish use tools to hunt and crack open shellfish, extract food that

1512-546: A head made from metal. These heads may either be single-edged, double-edged or barbed. Styles vary according to function and origin. For example, a sibat designed for fishing may not be the same as those used for hunting. The spear was used as the primary weapon in expeditions and battles against neighbouring island kingdoms and it became famous during the 1521 Battle of Mactan , where the chieftain Lapu Lapu of Cebu fought against Spanish forces led by Ferdinand Magellan who

1620-414: A hunter to dress as a buffalo and lure one into a ravine where other hunters were hiding. Once the buffalo appeared, the other hunters would kill him with spears. A variation of this technique, called the buffalo jump , was when a runner would lead the animals towards a cliff. As the buffalo got close to the cliff, other members of the tribe would jump out from behind rocks or trees and scare the buffalo over

1728-528: A localized or isolated manner within certain unique primate cultures , being transmitted and practiced among socially connected primates through cultural learning . Many famous researchers, such as Charles Darwin in his book The Descent of Man , mentioned tool-use in monkeys (such as baboons ). Among other mammals , both wild and captive elephants are known to create tools using their trunks and feet, mainly for swatting flies, scratching, plugging up waterholes that they have dug (to close them up again so

1836-703: A major expansion in their use in Ancient Greece and Ancient Rome with the systematic employment of new energy sources, especially waterwheels . Their use expanded through the Dark Ages with the addition of windmills . Machine tools occasioned a surge in producing new tools in the Industrial Revolution . Pre-industrial machinery was built by various craftsmen— millwrights built water and windmills, carpenters made wooden framing, and smiths and turners made metal parts. Wooden components had

1944-448: A metal spearhead shaped like a triangle , diamond , or leaf . The heads of fishing spears usually feature multiple sharp points , with or without barbs. Spears can be divided into two broad categories: those designed for thrusting as a melee weapon (including weapons such as lances and pikes ) and those designed for throwing as a ranged weapon (usually referred to as javelins ). The spear has been used throughout human history as

2052-410: A particular car might have all its wheels changed, and still be regarded as the same car. The identity of an object may not split. If an object is broken into two pieces at most one of the pieces has the same identity. An object's identity may also be destroyed if the simplest description of the system at a point in time changes from identifying the object to not identifying it. Also an object's identity

2160-539: A physical body is a mental object , but still has extension in the space of a visual field. Spear A spear is a polearm consisting of a shaft, usually of wood , with a pointed head. The head may be simply the sharpened end of the shaft itself, as is the case with fire hardened spears, or it may be made of a more durable material fastened to the shaft, such as bone , flint , obsidian , copper , bronze , iron , or steel . The most common design for hunting and/or warfare, since ancient times has incorporated

2268-577: A physical object has physical properties , as compared to mental objects . In ( reductionistic ) behaviorism , objects and their properties are the (only) meaningful objects of study. While in the modern day behavioral psychotherapy it is still only the means for goal oriented behavior modifications, in Body Psychotherapy it is not a means only anymore, but its felt sense is a goal of its own. In cognitive psychology , physical bodies as they occur in biology are studied in order to understand

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2376-581: A primatologist and professor of anthropology at the University of Southern California , has suggested that the discovery of spear use by chimpanzees means that early humans may have used wooden spears before this. From circa 200,000 BC onwards, Middle Paleolithic humans began to make complex stone blades with flaked edges which were used as spear heads. These stone heads could be fixed to the spear shaft by gum or resin or by bindings made of animal sinew, leather strips or vegetable matter. During this period,

2484-539: A revival in the 1930s. Spear hunting is still practiced in the United States. Animals taken are primarily wild boar and deer , although trophy animals as large as Cape Buffalo have been hunted with spears. Alligators are hunted in Florida with a type of harpoon . One of the gymnastic exercises performed by the ancient Greeks was the throwing of a spear, referred to as ἀκυντισμός. Like many weapons,

2592-503: A simple hasta and, perhaps, javelins or darts. During the 3rd century AD, although the pilum continued to be used, legionaries usually were equipped with other forms of throwing and thrusting spear, similar to auxilia of the previous century. By the 4th century, the pilum had effectively disappeared from common use. In the late period of the Roman Empire, the spear became more often used because of its anti-cavalry capacities as

2700-573: A spear that was called an az-zaġāyah . Berbers pronounced it zaġāya , but the English term, derived from the Old French via Berber , is " assegai ". It is a polearm used for throwing or hurling, usually a light spear or javelin made of hard wood and pointed with a forged iron tip. The az-zaġāyah played an important role during the Islamic conquest as well as during later periods, well into

2808-492: A sword, it remained the main weapon of the common soldier. The Vikings , for instance, although often portrayed with an axe , sword , or lance in hand, were armed mostly with spears, as were their Anglo-Saxon , Irish , or continental contemporaries. Spears eventually evolved into lances; this is where the lance depiction comes from. With a good majority of Medieval weapons being spears they became integrated into many war tactics. Spears were very commonly used while providing

2916-456: A target's shield. Originally the principes were armed with a short spear called a hasta , but these gradually fell out of use, eventually being replaced by the gladius. The third line, the triarii , continued to use the hasta . From the late 2nd century BC, all legionaries were equipped with the pilum . The pilum continued to be the standard legionary spear until the end of the 2nd century AD. Auxilia , however, were equipped with

3024-446: A unit by translation or rotation, in 3-dimensional space . Each object has a unique identity, independent of any other properties. Two objects may be identical, in all properties except position, but still remain distinguishable. In most cases the boundaries of two objects may not overlap at any point in time. The property of identity allows objects to be counted. Examples of models of physical bodies include, but are not limited to

3132-639: A variety of materials such as the sang made completely of steel, and the ballam which had a bamboo shaft. The Arab presence in Sindh and the Mameluks of Delhi introduced the Middle Eastern javelin into India. The Rajputs wielded a type of spear for infantrymen which had a club integrated into the spearhead, and a pointed butt end. Other spears had forked blades, several spear-points, and numerous other innovations. One particular spear unique to India

3240-443: A weapon for hunting and/or fishing and for warfare. Along with the club , knife , and axe , it is one of the earliest and most widespread tools ever developed by early humans. As a weapon, it may be wielded with either one or two hands. It was used in virtually every conflict up until the modern era , where even to this day, it lives on in the form of a bayonet fixed onto the muzzle of a long gun . The word spear comes from

3348-455: Is "makeshift" when human ingenuity comes into play and a tool is used for an unintended purpose, such as using a long screwdriver to separate a cars control arm from a ball joint, instead of using a tuning fork. In many cases, the designed secondary functions of tools are not widely known. For example, many wood-cutting hand saws integrate a square by incorporating a specially-shaped handle, that allows 90° and 45° angles to be marked by aligning

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3456-575: Is a limit to the accuracy with which the position and velocity may be measured . A particle or collection of particles is described by a quantum state . These ideas vary from the common usage understanding of what an object is. In particle physics , there is a debate as to whether some elementary particles are not bodies, but are points without extension in physical space within spacetime , or are always extended in at least one dimension of space as in string theory or M theory . In some branches of psychology , depending on school of thought ,

3564-432: Is a contiguous surface which may be used to determine what is inside, and what is outside an object. An object is a single piece of material, whose extent is determined by a description based on the properties of the material. An imaginary sphere of granite within a larger block of granite would not be considered an identifiable object, in common usage. A fossilized skull encased in a rock may be considered an object because it

3672-518: Is a motto of some importance for workers who cannot practically carry every specialized tool to the location of every work task, such as a carpenter who does not necessarily work in a shop all day and needs to do jobs in a customer's house. Tool substitution may be divided broadly into two classes: substitution "by-design", or "multi-purpose", and substitution as makeshift. Substitution "by-design" would be tools that are designed specifically to accomplish multiple tasks using only that one tool. Substitution

3780-454: Is an example of physical system . An object is known by the application of senses . The properties of an object are inferred by learning and reasoning based on the information perceived. Abstractly, an object is a construction of our mind consistent with the information provided by our senses, using Occam's razor . In common usage an object is the material inside the boundary of an object, in three-dimensional space. The boundary of an object

3888-409: Is created at the first point in time that the simplest model of the system consistent with perception identifies it. An object may be composed of components. A component is an object completely within the boundary of a containing object. A living thing may be an object, and is distinguished from non-living things by the designation of the latter as inanimate objects . Inanimate objects generally lack

3996-450: Is for example a combination of a measuring tool (the clock) and a perception tool (the alarm). This enables the alarm-clock to be a tool that falls outside of all the categories mentioned above. There is some debate on whether to consider protective gear items as tools, because they do not directly help perform work, just protect the worker like ordinary clothing. They do meet the general definition of tools and in many cases are necessary for

4104-500: Is longer than a Qiang , others say that the main difference is between the stiffness of the shaft, where the Qiang would be flexible and the Mao would be stiff. Scholars seem to lean toward the latter explanation more than the former. Because of the difference in the construction of the Mao and the Qiang , the usage is also different, though there is no definitive answer as to what exactly

4212-486: Is made with stone arches and lined with waterproof concrete. The earliest evidence of water wheels and watermills date back to the ancient Near East in the 4th century BC, specifically in the Persian Empire before 350 BC, in the regions of Mesopotamia (Iraq) and Persia (Iran). This pioneering use of water power constituted perhaps the first use of mechanical energy . Mechanical devices experienced

4320-484: Is not constrained to consist of the same collection of matter . Atoms or parts of an object may change over time. An object is usually meant to be defined by the simplest representation of the boundary consistent with the observations. However the laws of physics only apply directly to objects that consist of the same collection of matter. In physics , an object is an identifiable collection of matter , which may be constrained by an identifiable boundary, and may move as

4428-541: Is out of reach, or clear an area for nesting. Among cephalopods (and perhaps uniquely or to an extent unobserved among invertebrates ), octopuses are known to use tools relatively frequently, such as gathering coconut shells to create a shelter or using rocks to create barriers. By extension, concepts which support systematic or investigative thought are often referred to as "tools", for example Vanessa Dye refers to "tools of reflection" and "tools to help sharpen your professional practice" for trainee teachers, illustrating

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4536-482: Is possible to determine the extent of the skull based on the properties of the material. For a rigid body , the boundary of an object may change over time by continuous translation and rotation . For a deformable body the boundary may also be continuously deformed over time in other ways. An object has an identity . In general two objects with identical properties, other than position at an instance in time, may be distinguished as two objects and may not occupy

4644-458: Is still being used by certain wandering Sufi ascetics ( Derwishes ) . In the Chinese martial arts , the Chinese spear ( Qiang 槍) is popularly known as the "king of weapons". The spear is listed in the group of the four major weapons (along with the gun ( staff ), dao (a single-edged blade similar to a sabre ), and the jian ( sword )). Spears were used first as hunting weapons amongst

4752-562: The angon , a throwing spear with a long head similar to the Roman pilum , used by the Franks and Anglo-Saxons, and the winged (or lugged) spear , which had two prominent wings at the base of the spearhead, either to prevent the spear penetrating too far into an enemy or to aid in spear fencing. Originally a Frankish weapon, the winged spear also was popular with the Vikings. It would become

4860-568: The Ba Shu area. In the Han dynasty the Mao and the Ji (戟 Ji can be loosely defined as a halberd) rose to prominence in the military. Interesting to note is that the amount of iron Mao-heads found exceeds the number of bronze heads. By the end of the Han dynasty ( Eastern Han ) the process of replacement of the iron Mao had been completed and the bronze Mao had been rendered completely obsolete. After

4968-426: The Industrial Revolution marking an inflection point in the use of tools. The introduction of widespread automation in the 19th and 20th centuries allowed tools to operate with minimal human supervision, further increasing the productivity of human labor . By extension, concepts that support systematic or investigative thought are often referred to as "tools" or "toolkits". While a common-sense understanding of

5076-658: The Mycenaean period in which the Iliad is set, and, anachronistically, a later style, with throwing spears, from Homer's own Archaic period. In the 7th century BC, the Greeks evolved a new close-order infantry formation, the phalanx . The key to this formation was the hoplite , who was equipped with a large, circular, bronze-faced shield ( aspis ) and a 210–270 cm (7–9 ft) spear with an iron head and bronze butt-spike ( doru ). The hoplite phalanx dominated warfare among

5184-562: The Old English spere , from the Proto-Germanic speri , from a Proto-Indo-European root *sper- "spear, pole". Spear manufacture and use is not confined to humans. It is also practiced by the western chimpanzee . Chimpanzees near Kédougou , Senegal have been observed to create spears by breaking straight limbs off trees, stripping them of their bark and side branches, and sharpening one end with their teeth. They then used

5292-468: The Qiang in four categories: "一曰漆枪， 二曰木枪， 三曰白杆枪， 四曰扑头枪。” Roughly translated the four categories are: Qi (a kind of wood) Spears, Wooden Spears, Bai Gan (A kind of wood) Spears and Pu Tou Qiang. The Qiang that were produced in the Song and Ming dynasties consisted of four major parts: Spearhead, Shaft, End Spike and Tassel. The types of Qiang that exist are many. Among the types there are cavalry Qiang that were

5400-540: The Quaternary extinction event was that most of these animals were hunted to extinction by humans with spears. Even after the invention of other hunting weapons such as the bow and sling , the spear continued to be used, either as a projectile weapon or used by hand, such as in bear hunting and boar hunting . Spear hunting fell out of favor in most of Europe in the 18th century, but continued in Germany, enjoying

5508-644: The Swiss Army knife represents one of the earliest examples. Other tools have a primary purpose but also incorporate other functionality – for example, lineman's pliers incorporate a gripper and cutter and are often used as a hammer; and some hand saws incorporate a square in the right-angle between the blade's dull edge and the saw's handle. This would also be the category of "multi-purpose" tools, since they are also multiple tools in one (multi-use and multi-purpose can be used interchangeably – compare hand axe ). These types of tools were specifically made to catch

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5616-467: The mind , which may not be a physical body, as in functionalist schools of thought. A physical body is an enduring object that exists throughout a particular trajectory of space and orientation over a particular duration of time , and which is located in the world of physical space (i.e., as studied by physics ). This contrasts with abstract objects such as mathematical objects which do not exist at any particular time or place. Examples are

5724-569: The pollaxe were adopted by knights and this practice ceased. The development of both the long, two-handed pike and gunpowder firearms in Renaissance Europe saw an ever-increasing focus on integrated infantry tactics. Those infantry not armed with these weapons carried variations on the polearm, including the halberd and the bill . At the start of the Renaissance, cavalry remained predominantly lance-armed; gendarmes with

5832-560: The razakars of Nizams of Hyderabad State as late as the second half of the 20th century. The hoko spear was used in ancient Japan sometime between the Yayoi period and the Heian period , but it became unpopular as early samurai often acted as horseback archers . Medieval Japan employed spears again for infantrymen to use, but it was not until the 11th century in that samurai began to prefer spears over bows. Several polearms were used in

5940-467: The spacetime : roughly speaking, it means that for a given moment of time the body has some location in the space (although not necessarily amounting to the abstraction of a point in space and time ). A physical body as a whole is assumed to have such quantitative properties as mass , momentum , electric charge , other conserved quantities , and possibly other quantities. An object with known composition and described in an adequate physical theory

6048-626: The 20th century. A longer pole az-zaġāyah was being used as a hunting weapon from horseback. The az-zaġāyah was widely used. It existed in various forms in areas stretching from Southern Africa to the Indian subcontinent , although these places already had their own variants of the spear. This javelin was the weapon of choice during the Fulani jihad as well as during the Mahdist War in Sudan. It

6156-550: The Aztecs preferred the sword-like macuahuitl clubs for fighting, the advantage of a far-reaching thrusting weapon was recognised, and a large portion of the army would carry the tepoztopilli into battle. The tepoztopilli was a polearm, and to judge from depictions in various Aztec codices, it was roughly the height of a man, with a broad wooden head about twice the length of the users' palm or shorter, edged with razor-sharp obsidian blades which were deeply set in grooves carved into

6264-599: The Greek City States from the 7th into the 4th century BC. The 4th century saw major changes. One was the greater use of peltasts , light infantry armed with spear and javelins. The other was the development of the sarissa , a two-handed pike 550 cm (18 ft) in length, by the Macedonians under Phillip of Macedon and Alexander the Great . The pike phalanx, supported by peltasts and cavalry, became

6372-603: The Han dynasty toward the Sui and Tang dynasties the Mao used by cavalry were fitted with much longer shafts, as is mentioned above. During this era, the use of the Shuo (矟) was widespread among the footmen. The Shuo can be likened to a pike or simply a long spear. After the Tang dynasty, the popularity of the Mao declined and was replaced by the Qiang (枪). The Tang dynasty divided

6480-612: The Japanese theatres; the naginata was a glaive-like weapon with a long, curved blade popularly among the samurai and the Buddhist warrior-monks , often used against cavalry; the yari was a longer polearm, with a straight-bladed spearhead, which became the weapon of choice of both the samurai and the ashigaru (footmen) during the Warring States Era ; the horseback samurai used shorter yari for his single-armed combat; on

6588-533: The Scots and the Flemish. Spears usually were used in tightly ordered formations, such as the shield wall or the schiltron . To resist cavalry, spear shafts could be planted against the ground. William Wallace drew up his schiltrons in a circle at the Battle of Falkirk in 1298 to deter charging cavalry; this was a widespread tactic sometimes known as the "crown" formation. Thomas Randolph, 1st Earl of Moray used

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6696-410: The addition or removal of material, if the system may be more simply described with the continued existence of the object, than in any other way. The addition or removal of material may discontinuously change the boundary of the object. The continuation of the object's identity is then based on the description of the system by continued identity being simpler than without continued identity. For example,

6804-403: The ancestor of later medieval polearms, such as the partisan and spetum . The thrusting spear also has the advantage of reach, being considerably longer than other weapon types. Exact spear lengths are hard to deduce as few spear shafts survive archaeologically, but 180–240 cm (6–8 ft) would seem to have been the average length. Some nations were noted for their long spears, including

6912-760: The ancient Chinese. They became popular as infantry weapons during the Warring States and Qin era, when spearmen were used as especially highly disciplined soldiers in organized group attacks. When used in formation fighting, spearmen would line up their large rectangular or circular shields in a shieldwall manner. The Qin also employed long spears (more akin to a pike) in formations similar to Swiss pikemen in order to ward off cavalry. The Han Empire would use similar tactics as its Qin predecessors. Halberds, polearms, and dagger axes were also common weapons during this time. Spears were also common weaponry for Warring States, Qin, and Han era cavalry units. During these eras,

7020-448: The appropriate part of the handle with an edge, and scribing along the back edge of the saw. The latter is illustrated by the saying "All tools can be used as hammers". Nearly all tools can be used to function as a hammer, even though few tools are intentionally designed for it and even fewer work as well as the original. Tools are often used to substitute for many mechanical apparatuses, especially in older mechanical devices. In many cases

7128-524: The barbarian invasions were often conducted by people with a developed culture of cavalry in warfare. After the fall of the Western Roman Empire, the spear and shield continued to be used by nearly all Western European cultures. Since a medieval spear required only a small amount of steel along the sharpened edges (most of the spear-tip was wrought iron), it was an economical weapon. Quick to manufacture, and needing less smithing skill than

7236-410: The battlefield. Its last flowering was the half-pike or spontoon , a shortened version of the pike carried by officers of various ranks. While originally a weapon, this came to be seen more as a badge of office, or leading staff by which troops were directed. The half-pike, sometimes known as a boarding pike, was also used as a weapon on board ships until the late 19th century. Muslim warriors used

7344-414: The blade of the spearhead near the socket, these holes were presumably used to attach tassels, much like modern day wushu spears. In the early Shang , the Mao appeared to have a relatively short shaft as well as a relatively narrow shaft as opposed to Mao in the later Shang and Western Zhou period. Some Mao from this era are heavily decorated as is evidenced by a Warring States period Mao from

7452-518: The capacity or desire to undertake actions, although humans in some cultures may tend to attribute such characteristics to non-living things. In classical mechanics a physical body is collection of matter having properties including mass , velocity , momentum and energy . The matter exists in a volume of three-dimensional space . This space is its extension . Interactions between objects are partly described by orientation and external shape. In continuum mechanics an object may be described as

7560-428: The cliff. Other hunters would be waiting at the bottom of the cliff to spear the animal to death. One of the earliest forms of killing prey for humans, hunting game with a spear and spear fishing continues to this day as both a means of catching food and as a cultural activity. Some of the most common prey for early humans were megafauna such as mammoths which were hunted with various kinds of spear. One theory for

7668-542: The communication network at another level. It is in the domain of media and communications technology that a counter-intuitive aspect of our relationships with our tools first began to gain popular recognition. John M. Culkin famously said, "We shape our tools and thereafter our tools shape us". One set of scholars expanded on this to say: "Humans create inspiring and empowering technologies but also are influenced, augmented, manipulated, and even imprisoned by technology". Physical object Also in common usage, an object

7776-408: The completion of the work. Personal protective equipment includes such items as gloves , safety glasses , ear defenders and biohazard suits. Often, by design or coincidence, a tool may share key functional attributes with one or more other tools. In this case, some tools can substitute for other tools, either as a makeshift solution or as a matter of practical efficiency. "One tool does it all"

7884-458: The connection between physical and conceptual tools by quoting the French scientist Claude Bernaud : we must change [our ideas] when they have served their purpose, as we change a blunt lancet that we have used long enough. Similarly, a decision-making process "developed to help women and their partners make confident and informed decisions when planning where to give birth" is described as

7992-545: The definition of what constitutes a tool and therefore which behaviours can be considered true examples of tool use. Observation has confirmed that a number of species can use tools including monkeys , apes , elephants , several birds, and sea otters . Now the unique relationship of humans with tools is considered to be that we are the only species that uses tools to make other tools. Primates are well known for using tools for hunting or gathering food and water, cover for rain, and self-defense. Chimpanzees have often been

8100-407: The development of several machine tools . They have their origins in the tools developed in the 18th century by makers of clocks and watches and scientific instrument makers to enable them to batch-produce small mechanisms. Before the advent of machine tools, metal was worked manually using the basic hand tools of hammers, files, scrapers, saws, and chisels. Consequently, the use of metal machine parts

8208-491: The differences are between the Mao and the Qiang . Spears are known as Bhala in Indian languages. Spears in the Indian society were used both in missile and non-missile form, both by cavalry and foot-soldiers. Mounted spear-fighting was practiced using with a 300 cm (10 ft), ball-tipped wooden lance called a bothati , the end of which was covered in dye so that hits may be confirmed. Spears were constructed from

8316-634: The disadvantage of changing dimensions with temperature and humidity, and the various joints tended to rack (work loose) over time. As the Industrial Revolution progressed, machines with metal parts and frames became more common. Other important uses of metal parts were in firearms and threaded fasteners, such as machine screws, bolts, and nuts. There was also the need for precision in making parts. Precision would allow better working machinery, interchangeability of parts, and standardization of threaded fasteners. The demand for metal parts led to

8424-400: The dominant mode of warfare among the Greeks from the late 4th century onward until Greek military systems were supplanted by the Roman legions. In the pre-Marian Roman armies, the first two lines of battle, the hastati and principes , often fought with a sword called a gladius and pila , heavy javelins that were specifically designed to be thrown at an enemy to pierce and foul

8532-468: The early centuries of recorded history, but archaeological evidence can provide dates of development and use. Several of the six classic simple machines ( wheel and axle , lever , pulley , inclined plane , wedge , and screw ) were invented in Mesopotamia . The wheel and axle mechanism first appeared with the potter's wheel , invented in what is now Iraq during the 5th millennium BC. This led to

8640-438: The end of the 16th century. Spears began to lose fashion among the infantry during the 14th century, being replaced by polearms that combined the thrusting properties of the spear with the cutting properties of the axe, such as the halberd . Where spears were retained they grew in length, eventually evolving into pikes , which would be a dominant infantry weapon in the 16th and 17th centuries. Cavalry spears were originally

8748-444: The eye of many different craftsman who traveled to do their work. To these workers these types of tools were revolutionary because they were one tool or one device that could do several different things. With this new revolution of tools, the traveling craftsman would not have to carry so many tools with them to job sites, in that their space would be limited to the vehicle or to the beast of burden they were driving. Multi-use tools solve

8856-569: The head, and cemented in place with bitumen or plant resin as an adhesive. The tepoztopilli was able both to thrust and slash effectively. Throwing spears also were used extensively in Meso-American warfare, usually with the help of an atlatl . Throwing spears were typically shorter and more stream-lined than the tepoztopilli, and some had obsidian edges for greater penetration. Typically, most spears made by Native Americans were created from materials surrounding their communities. Usually,

8964-469: The heavy knightly lance and lighter cavalry with a variety of lighter lances. By the 1540s, however, pistol-armed cavalry called reiters were beginning to make their mark. Cavalry armed with pistols and other lighter firearms, along with a sword, had virtually replaced lance armed cavalry in Western Europe by the beginning of the 17th century. Ultimately, the spear proper was rendered obsolete on

9072-751: The influx of a new population brought innovations around bronze technology. Unlike other cultures who wielded spears at this time, the Egyptians did not treat their javelins (around 1 meter to 3.3 feet long) as disposable, using them both for thrusting and throwing. As advanced metallurgy was largely unknown in pre-Columbian America outside of Western Mexico and South America , most weapons in Meso-America were made of wood or obsidian . This did not mean that they were less lethal, as obsidian may be sharpened to become many times sharper than steel. Meso-American spears varied greatly in shape and size. While

9180-463: The invention of the wheeled vehicle in Mesopotamia during the early 4th millennium BC. The lever was used in the shadoof water-lifting device, the first crane machine, which appeared in Mesopotamia c.  3000 BC , and then in ancient Egyptian technology c.  2000 BC . The earliest evidence of pulleys date back to Mesopotamia in the early 2nd millennium BC. The screw ,

9288-487: The last of the simple machines to be invented, first appeared in Mesopotamia during the Neo-Assyrian period (911–609 BC). The Assyrian King Sennacherib (704–681 BC) claims to have invented automatic sluices and to have been the first to use water screw pumps , of up to 30 tons weight, which were cast using two-part clay molds rather than by the ' lost wax ' process. The Jerwan Aqueduct ( c.  688 BC)

9396-399: The length of one zhang (approximately 320 cm or 10 ft), Litte-Flower Spears (Xiao Hua Qiang 小花枪) that are the length of one person and their arm extended above his head, double hooked spears, single hooked spears, ringed spears and many more. There is some confusion as to how to distinguish the Qiang from the Mao , as they are obviously very similar. Some people say that a Mao

9504-482: The meaning of tool is widespread, several formal definitions have been proposed. In 1981, Benjamin Beck published a widely used definition of tool use. This has been modified to: The external employment of an unattached or manipulable attached environmental object to alter more efficiently the form, position, or condition of another object, another organism, or the user itself, when the user holds and directly manipulates

9612-531: The momentum of the horse and knight to be focused on the weapon's tip, whilst still retaining accuracy and control. This use of the spear spurred the development of the lance as a distinct weapon that was perfected in the medieval sport of jousting . In the 14th century, tactical developments meant that knights and men-at-arms often fought on foot. This led to the practice of shortening the lance to about 150 cm (5 ft) to make it more manageable. As dismounting became commonplace, specialist polearms such as

9720-478: The object of study in regard to their usage of tools, most famously by Jane Goodall ; these animals are closely related to humans. Wild tool-use in other primates, especially among apes and monkeys , is considered relatively common, though its full extent remains poorly documented, as many primates in the wild are mainly only observed distantly or briefly when in their natural environments and living without human influence. Some novel tool-use by primates may arise in

9828-411: The only tools of "early man" that were studied and given importance. Now, more tools are recognized as culturally and historically relevant. As well as hunting, other activities required tools such as preparing food, "...nutting, leatherworking , grain harvesting and woodworking..." Included in this group are "flake stone tools". Tools are the most important items that the ancient humans used to climb to

9936-530: The other hand, ashigaru infantries used long yari (similar with European pike ) for their massed combat formation. Filipino spears ( sibat ) were used as both a weapon and a tool throughout the Philippines . It is also called a bangkaw (after the Bankaw Revolt .), sumbling or palupad in the islands of Visayas and Mindanao . Sibat are typically made from rattan, either with a sharpened tip or

10044-499: The preparation of food , hunting , the manufacture of weapons , and the working of materials to produce clothing and useful artifacts and crafts such as pottery , along with the construction of housing , businesses , infrastructure , and transportation . The development of metalworking made additional types of tools possible. Harnessing energy sources , such as animal power , wind , or steam , allowed increasingly complex tools to produce an even larger range of items, with

10152-425: The problem of having to deal with many different tools. Tool use by animals is a phenomenon in which an animal uses any kind of tool in order to achieve a goal such as acquiring food and water, grooming , defense, communication , recreation or construction . Originally thought to be a skill possessed only by humans , some tool use requires a sophisticated level of cognition. There is considerable discussion about

10260-414: The same as infantry spears and were often used with two hands or held with one hand overhead. In the 12th century, after the adoption of stirrups and a high-cantled saddle, the spear became a decidedly more powerful weapon. A mounted knight would secure the lance by holding it with one hand and tucking it under the armpit (the couched lance technique) In combination with a lance rest , this allowed all

10368-406: The same space at the same time (excluding component objects). An object's identity may be tracked using the continuity of the change in its boundary over time. The identity of objects allows objects to be arranged in sets and counted . The material in an object may change over time. For example, a rock may wear away or have pieces broken off it. The object will be regarded as the same object after

10476-425: The shaft of the spear was made with a wooden stick while the head of the spear was fashioned from arrowheads, pieces of metal such as copper, or a bone that had been sharpened. Spears were a preferred weapon by many since it was inexpensive to create, could more easily be taught to others, and could be made quickly and in large quantities. Native Americans used the buffalo pound method to kill buffalo, which required

10584-546: The shells of prey, as well as for scratching. Corvids (such as crows , ravens and rooks ) are well known for their large brains (among birds ) and tool use. New Caledonian crows are among the only animals that create their own tools. They mainly manufacture probes out of twigs and wood (and sometimes metal wire) to catch or impale larvae . Tool use in some birds may be best exemplified in nest intricacy. Tailorbirds manufacture 'pouches' to make their nests in. Some birds, such as weaver birds , build complex nests utilizing

10692-523: The spear would develop into a longer lance-like weapon used for cavalry charges. There are many words in Chinese that would be classified as a spear in English. The Mao is the predecessor of the Qiang . The first bronze Mao appeared in the Shang dynasty . This weapon was less prominent on the battlefield than the ge ( dagger-axe ). In some archaeological examples two tiny holes or ears can be found in

10800-475: The tool during or prior to use and is responsible for the proper and effective orientation of the tool. Other, briefer definitions have been proposed: An object carried or maintained for future use. The use of physical objects other than the animal's own body or appendages as a means to extend the physical influence realized by the animal. An object that has been modified to fit a purpose ... [or] An inanimate object that one uses or modifies in some way to cause

10908-529: The top of the food chain ; by inventing tools, they were able to accomplish tasks that human bodies could not, such as using a spear or bow to kill prey , since their teeth were not sharp enough to pierce many animals' skins. "Man the hunter" as the catalyst for Hominin change has been questioned. Based on marks on the bones at archaeological sites, it is now more evident that pre-humans were scavenging off of other predators' carcasses rather than killing their own food. Many tools were made in prehistory or in

11016-401: The use of one tool that has at least two different capabilities. "Multi-purpose" tools are basically multiple tools in one device/tool. Tools such as this are often power tools that come with many different attachments like a rotary tool does, so one could say that a power drill is a "multi-purpose" tool. A multi-tool is a hand tool that incorporates several tools into a single, portable device;

11124-524: The water does not evaporate), and reaching food that is out of reach. Many other social mammals particularly have been observed engaging in tool-use. A group of dolphins in Shark Bay uses sea sponges to protect their beaks while foraging. Sea otters will use rocks or other hard objects to dislodge food (such as abalone ) and break open shellfish . Many or most mammals of the order Carnivora have been observed using tools, often to trap or break open

11232-744: The weapons to hunt galagos sleeping in hollows. The Clacton Spear found in England and the Schöningen spears found in present-day Germany document that wooden spears have been used for hunting since at least 400,000 years ago. A 2012 study from the site of Kathu Pan in South Africa suggests that hominids, possibly Homo heidelbergensis , may have developed the technology of hafted stone-tipped spears in Africa about 500,000 years ago. Wood does not preserve well, however, and Craig Stanford,

11340-482: Was kept to a minimum. Hand methods of production were very laborious and costly and precision was difficult to achieve. With their inherent precision, machine tools enabled the economical production of interchangeable parts . Examples of machine tools include: Advocates of nanotechnology expect a similar surge as tools become microscopic in size. One can classify tools according to their basic functions: Some tools may be combinations of other tools. An alarm-clock

11448-472: Was subsequently killed. The various types of the assegai (a light spear or javelin made of wood and pointed with iron or fire-hardened tip) were used throughout Africa and it was the most common weapon used before the introduction of firearms . The Zulu , Xhosa and other Nguni tribes of South Africa were renowned for their use of the assegai. Shaka of the Zulu invented a shorter stabbing spear with

11556-527: Was the vita or corded lance. Used by the Maratha Army , it had a rope connecting the spear with the user's wrist, allowing the weapon to be thrown and pulled back. The Vel is a type of spear or lance, originated in Southern India , primarily used by Tamils . Sikh Nihangs sometimes carry a spear even today. Spears were used in conflicts and training by armed paramilitary units such as

11664-520: Was typically used with one hand while the off hand held a cowhide shield for protection. Similar to most armies of their period, Ancient Egyptian forces were centered around the use of the spear. In battle, spearmen would be armed with a bronze -tipped spear (dja) and shield (ikem), which were used in elaborate formations much like Greek and Roman forces. Before the Hyksos invasion into Egypt, wooden spears were used, which were prone to splinter, but

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