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Animal echolocation, non-human animals emitting sound waves and listening to the echo in order to locate objects or navigate. Human echolocation , the use of sound by people to navigate. Sonar ( so und n avigation a nd r anging), the use of sound on water or underwater, to navigate or to locate other watercraft, usually by submarines.
Swedish soldiers operating an acoustic locator in 1940. Acoustic location is a method of determining the position of an object or sound source by using sound waves. Location can take place in gases (such as the atmosphere), liquids (such as water), and in solids (such as in the earth).
(pl.) aboiteaux A sluice or conduit built beneath a coastal dike, with a hinged gate or a one-way valve that closes during high tide, preventing salt water from flowing into the sluice and flooding the land behind the dike, but remains open during low tide, allowing fresh water precipitation and irrigation runoff to drain from the land into the sea; or a method of land reclamation which relies ...
Human echolocation is the ability of humans to detect objects in their environment by sensing echoes from those objects, by actively creating sounds: for example, by tapping their canes, lightly stomping their foot, snapping their fingers, or making clicking noises with their mouths.
Many plant species bear the specific epithet "cernua". cespitose An alternative spelling of caespitose, meaning tufted or turf-like, e.g. the growth form of some grasses. chamber A cavity of an ovary. channelled Sunken below the surface, resulting in a rounded channel. chartaceous Having a papery texture. chasmogamous
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Nicotiana obtusifolia, or desert tobacco, is a plant native to the southwestern United States [4] (from California to Utah to Texas) and Mexico. [ 3 ] It is a woody perennial herb growing up to about 80 centimetres (31 in) in maximum height.
Big Tobacco; Bureau of Alcohol, Tobacco, Firearms and Explosives; History of commercial tobacco in the United States; List of countries by tobacco consumption per capita; Plantation economy; Nicotine; Smoking; Tar (tobacco residue) Tobacco and health; Tobacco and other drugs; Prevalence of tobacco usage