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40 relations: Aesculus, Antler, Aspen, Auger (drill), Bone, Brace (tool), Campfire, Carnelian, Cedrus, Control of fire by early humans, Dentistry, Drill, Exoskeleton, Fire piston, Flywheel, Friction, Hazel, Heat, Indus Valley Civilisation, Iran, Jasper, Juniperus virginiana, Lapis lazuli, Liriodendron, Lubricant, Maple, Mehrgarh, Populus, Pressure, Rock (geology), Rope, Sebaceous gland, Speed, Thumb, Tilia americana, Tinder, Tool, Willow, Woodworking, Yucca.
Aesculus
The genus Aesculus, with varieties called buckeye and horse chestnut, comprises 13–19 species of flowering plants in the soapberry and lychee family Sapindaceae.
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Antler
Antlers are extensions of an animal's skull found in members of the deer family.
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Aspen
Aspen is a common name for certain tree species; some, but not all, are classified by botanists in the section ''Populus'', of the Populus genus.
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Auger (drill)
An auger is a drilling device, or drill bit, that usually includes a rotating helical screw blade called a "flighting" to act as a screw conveyor to remove the drilled out material.
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Bone
A bone is a rigid organ that constitutes part of the vertebrate skeleton.
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Brace (tool)
A brace is a hand tool used with a bit (drill bit or auger) to drill holes, usually in wood.
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Campfire
A campfire is a fire at a campsite that provides light and warmth, and heat for cooking.
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Carnelian
Carnelian (also spelled cornelian) is a brownish-red mineral commonly used as a semi-precious gemstone.
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Cedrus
Cedrus (common English name cedar) is a genus of coniferous trees in the plant family Pinaceae (subfamily Abietoideae).
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Control of fire by early humans
The control of fire by early humans was a turning point in the cultural aspect of human evolution.
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Dentistry
Dentistry is a branch of medicine that consists of the study, diagnosis, prevention, and treatment of diseases, disorders, and conditions of the oral cavity, commonly in the dentition but also the oral mucosa, and of adjacent and related structures and tissues, particularly in the maxillofacial (jaw and facial) area.
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Drill
A drill is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for boring holes in various materials or fastening various materials together.
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Exoskeleton
An exoskeleton (from Greek έξω, éxō "outer" and σκελετός, skeletós "skeleton") is the external skeleton that supports and protects an animal's body, in contrast to the internal skeleton (endoskeleton) of, for example, a human.
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Fire piston
A fire piston, sometimes called a fire syringe or a slam rod fire starter, is a device of ancient origin which is used to kindle fire.
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Flywheel
A flywheel is a mechanical device specifically designed to efficiently store rotational energy.
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Friction
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
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Hazel
The hazel (Corylus) is a genus of deciduous trees and large shrubs native to the temperate Northern Hemisphere.
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Heat
In thermodynamics, heat is energy transferred from one system to another as a result of thermal interactions.
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Indus Valley Civilisation
The Indus Valley Civilisation (IVC), or Harappan Civilisation, was a Bronze Age civilisation (5500–1300 BCE; mature period 2600–1900 BCE) mainly in the northwestern regions of South Asia, extending from what today is northeast Afghanistan to Pakistan and northwest India.
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Iran
Iran (ایران), also known as Persia, officially the Islamic Republic of Iran (جمهوری اسلامی ایران), is a sovereign state in Western Asia. With over 81 million inhabitants, Iran is the world's 18th-most-populous country. Comprising a land area of, it is the second-largest country in the Middle East and the 17th-largest in the world. Iran is bordered to the northwest by Armenia and the Republic of Azerbaijan, to the north by the Caspian Sea, to the northeast by Turkmenistan, to the east by Afghanistan and Pakistan, to the south by the Persian Gulf and the Gulf of Oman, and to the west by Turkey and Iraq. The country's central location in Eurasia and Western Asia, and its proximity to the Strait of Hormuz, give it geostrategic importance. Tehran is the country's capital and largest city, as well as its leading economic and cultural center. Iran is home to one of the world's oldest civilizations, beginning with the formation of the Elamite kingdoms in the fourth millennium BCE. It was first unified by the Iranian Medes in the seventh century BCE, reaching its greatest territorial size in the sixth century BCE, when Cyrus the Great founded the Achaemenid Empire, which stretched from Eastern Europe to the Indus Valley, becoming one of the largest empires in history. The Iranian realm fell to Alexander the Great in the fourth century BCE and was divided into several Hellenistic states. An Iranian rebellion culminated in the establishment of the Parthian Empire, which was succeeded in the third century CE by the Sasanian Empire, a leading world power for the next four centuries. Arab Muslims conquered the empire in the seventh century CE, displacing the indigenous faiths of Zoroastrianism and Manichaeism with Islam. Iran made major contributions to the Islamic Golden Age that followed, producing many influential figures in art and science. After two centuries, a period of various native Muslim dynasties began, which were later conquered by the Turks and the Mongols. The rise of the Safavids in the 15th century led to the reestablishment of a unified Iranian state and national identity, with the country's conversion to Shia Islam marking a turning point in Iranian and Muslim history. Under Nader Shah, Iran was one of the most powerful states in the 18th century, though by the 19th century, a series of conflicts with the Russian Empire led to significant territorial losses. Popular unrest led to the establishment of a constitutional monarchy and the country's first legislature. A 1953 coup instigated by the United Kingdom and the United States resulted in greater autocracy and growing anti-Western resentment. Subsequent unrest against foreign influence and political repression led to the 1979 Revolution and the establishment of an Islamic republic, a political system that includes elements of a parliamentary democracy vetted and supervised by a theocracy governed by an autocratic "Supreme Leader". During the 1980s, the country was engaged in a war with Iraq, which lasted for almost nine years and resulted in a high number of casualties and economic losses for both sides. According to international reports, Iran's human rights record is exceptionally poor. The regime in Iran is undemocratic, and has frequently persecuted and arrested critics of the government and its Supreme Leader. Women's rights in Iran are described as seriously inadequate, and children's rights have been severely violated, with more child offenders being executed in Iran than in any other country in the world. Since the 2000s, Iran's controversial nuclear program has raised concerns, which is part of the basis of the international sanctions against the country. The Joint Comprehensive Plan of Action, an agreement reached between Iran and the P5+1, was created on 14 July 2015, aimed to loosen the nuclear sanctions in exchange for Iran's restriction in producing enriched uranium. Iran is a founding member of the UN, ECO, NAM, OIC, and OPEC. It is a major regional and middle power, and its large reserves of fossil fuels – which include the world's largest natural gas supply and the fourth-largest proven oil reserves – exert considerable influence in international energy security and the world economy. The country's rich cultural legacy is reflected in part by its 22 UNESCO World Heritage Sites, the third-largest number in Asia and eleventh-largest in the world. Iran is a multicultural country comprising numerous ethnic and linguistic groups, the largest being Persians (61%), Azeris (16%), Kurds (10%), and Lurs (6%).
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Jasper
Jasper, an aggregate of microgranular quartz and/or chalcedony and other mineral phases,Kostov, R. I. 2010.
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Juniperus virginiana
Juniperus virginiana — its common names include red cedar, eastern redcedar,Flora of North America: Virginian juniper, eastern juniper, red juniper, pencil cedar, and aromatic cedar — is a species of juniper native to eastern North America from southeastern Canada to the Gulf of Mexico and east of the Great Plains.
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Lapis lazuli
Lapis lazuli, or lapis for short, is a deep blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color.
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Liriodendron
Liriodendron is a genus of two species of characteristically large deciduous trees in the magnolia family (Magnoliaceae).
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Lubricant
A lubricant is a substance, usually organic, introduced to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move.
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Maple
Acer is a genus of trees or shrubs commonly known as maple.
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Mehrgarh
Mehrgarh (Balochi: Mehrgaŕh; مهرګړ; مہرگڑھ), sometimes anglicized as Mehergarh or Mehrgar, is a Neolithic (7000 BCE to c. 2500/2000 BCE) site located near the Bolan Pass on the Kacchi Plain of Balochistan, Pakistan, to the west of the Indus River valley.
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Populus
Populus is a genus of 25–35 species of deciduous flowering plants in the family Salicaceae, native to most of the Northern Hemisphere.
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Pressure
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.
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Rock (geology)
Rock or stone is a natural substance, a solid aggregate of one or more minerals or mineraloids.
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Rope
A rope is a group of yarns, plies, fibers or strands that are twisted or braided together into a larger and stronger form.
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Sebaceous gland
Sebaceous glands are microscopic exocrine glands in the skin that secrete an oily or waxy matter, called sebum, to lubricate and waterproof the skin and hair of mammals.
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Speed
In everyday use and in kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity.
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Thumb
The thumb is the first digit of the hand.
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Tilia americana
Tilia americana is a species of tree in the Malvaceae family, native to eastern North America, from southeast Manitoba east to New Brunswick, southwest to northeast Oklahoma, southeast to South Carolina, and west along the Niobrara River to Cherry County, Nebraska.
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Tinder
Tinder is easily combustible material used to start a fire.
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Tool
A tool is any physical item that can be used to achieve a goal, especially if the item is not consumed in the process.
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Willow
Willows, also called sallows, and osiers, form the genus Salix, around 400 speciesMabberley, D.J. 1997.
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Woodworking
Woodworking is the activity or skill of making items from wood, and includes cabinet making (cabinetry and furniture), wood carving, joinery, carpentry, and woodturning.
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Yucca
Yucca is a genus of perennial shrubs and trees in the family Asparagaceae, subfamily Agavoideae.
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Redirects here:
Bow and drill, Bow spindle, Fire bow, Hearth board, Pump drill.
References
[1] https://en.wikipedia.org/wiki/Bow_drill
