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...ary to control the altitude of an airship by controlling its buoyancy: '''buoyancy compensation'''. ==Changes which have an effect on buoyancy== ...

...the average density of the system tube-water-air, resulting with negative buoyancy and the tube sinks.]] ...is a classic [[science]] experiment which demonstrates the principle of [[buoyancy]] ([[Archimedes]]' principle) and the [[ideal gas law]]. The first written ...

...as mass but may appear to have no weight or even negative weight, due to [[buoyancy]] in air. However the weight of the balloon and the gas inside it has merel ==Buoyancy and weight== ...

...be pumped into ballast tanks within the PCU to provide sufficient negative buoyancy to aid its descent into the water. The PCU is almost entirely submerged und ...waves.''<ref>[http://www.emec.org.uk/wave_energy_devices.asp " Wave Energy Devices"]. European Marine Energy Centre. Retrieved 2011-01-29</ref>}} ...

...lds the body in a more [[hydrodynamic]] position, and traps air which adds buoyancy. ...In fact, some swimmers wore two or more of these suits at once to increase buoyancy. In total, 23 out of the 25 swimming world records broken at the Beijing O ...

...m|buoy}}</ref><ref>{{cite American Heritage Dictionary|buoy}}</ref> is a [[buoyancy|float]]ing device that can have many purposes. It can be [[anchor]]ed (stat ...er.<ref name=Davies>{{cite journal |author=Davies, D |title=Diver location devices |journal=Journal of the [[South Pacific Underwater Medicine Society]] |volu ...

...acement hull: here the hull is supported exclusively or predominantly by [[buoyancy]]. Vessels that have this type of hull travel through the water at a limite ...amic lift; however, most of the vessel's weight is still supported through buoyancy. ...

...nd, extracts wind energy by supporting a wind turbine. In another class of devices, such as [[crosswind kite power]], generators are on the ground; one or mor An aerostat-type wind power system relies at least in part on [[buoyancy]] to support the wind-collecting elements. Aerostats vary in their designs ...

...unction), forms of controlled release medicines include gels, implants and devices (e.g. the [[vaginal ring]] and [[contraceptive implant]]) and [[transdermal ...systems can be broken into two subcategories, reservoir devices and matrix devices.<ref name="pharmatutor" /> ...

...d breathing apparatus. Respirators are described as [[Air filter|filtering devices]], which may be powered, using a motor to pass ambient air through the filt ====Oxygen conserving devices==== ...

...red in the source, which will eventually be exhausted. A common example is devices powered by ocean currents, whose energy is ultimately derived from the Sun, ...p. 522-526.</ref> For millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern theories of thermodynam ...

The Lorentz force occurs in many devices, including: ...ace force on an electric current in a conductor, this force occurs in many devices including: ...

...hanging the amount of water and air in [[ballast tank]]s to affect their [[buoyancy]]. ===Buoyancy and trim=== ...

...d from other kinds of lift in fluids. [[Aerostatics|Aerostatic]] lift or [[buoyancy]], in which an internal fluid is lighter than the surrounding fluid, does n ...>A uniform pressure surrounding a body does not create a net force. (See [[buoyancy]]). Therefore pressure differences are needed to exert a force on a body im ...

...d for millennia to define standard weights); [[Archimedes' principle]] for buoyancy; Archimedes' analysis of the [[lever]]; [[Boyle's law]] for gas pressure; a ...l locations in space. Pressure gradients and differentials result in the [[buoyancy|buoyant force]] for fluids suspended in gravitational fields, winds in [[at ...

...on the balloon, the air inside is heated and expands, causing an upward [[buoyancy]] force, much like an artificially heated [[hot air balloon]]. Some solar b ...tricity generation. [[Thermogenerator|Thermoelectric]], or "thermovoltaic" devices convert a temperature difference between dissimilar materials into an elect ...

...erm= '''[[Archimedes' principle]]'''}}{{defn|defn=States that the upward [[buoyancy|buoyant force]] that is exerted on a body immersed in a [[fluid]], whether {{term|term= '''[[Buoyancy]]'''}}{{defn|defn=A force caused by displacement in a fluid by an object of ...

* Friction devices, such as [[brakes]] or [[clutch]]es; ...n Robotics, 2021.</ref> Alternatively, mobile robots can rely on guidance devices that allow them to travel a pre-defined navigation route in relatively cont ...