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Buoyancy also applies to fluid mixtures, and is the most common driving force of convection currents. In these cases, the mathematical modelling is altered to apply to continua, but the principles remain the same. Examples of buoyancy driven flows include the spontaneous separation of air and water or oil and water.
If the buoyancy of an (unrestrained and unpowered) object exceeds its weight, it tends to rise. An object whose weight exceeds its buoyancy tends to sink. Calculation of the upwards force on a submerged object during its accelerating period cannot be done by the Archimedes principle alone; it is necessary to consider dynamics of an object ...
Hydrostatics offers physical explanations for many phenomena of everyday life, such as why ... Discovery of the principle of buoyancy ... there is an important ...
Bubbles are seen in many places in everyday life, for example: As spontaneous nucleation of supersaturated carbon dioxide in soft drinks; As vapor in boiling water; As air mixed into agitated water, such as below a waterfall; As sea foam; As a soap bubble; As given off in chemical reactions, e.g., baking soda + vinegar
Buoyancy is important in many fields. Boats, ships and seaplanes are engineered in a way that ensures that they remain afloat. Submarines have controllable buoyancy to make them submerge and rise on demand. Many objects were developed with buoyancy in mind, such as life preservers and pontoons. Buoyancy is essential to most water sports.
Sea water produces buoyancy and provides support for plants and animals. That's the reason why in the ocean organisms can be that huge like the blue whale and macrophytes. And the densities or rigidities of the oceanic organisms are relative low compared with that of the terrestrial species.
A year in Svalbard is marked by two unusual periods of light: polar night and midnight sun. Polar night runs from mid-November to the end of January, when the sun doesn’t rise above the horizon.
Birds that swim, however, must contend with the increased buoyancy effects of having lighter bones and a reduced body mass. Instead, diving birds increase their muscle mass, resulting in an overall increase in body mass that reduces the effects of buoyancy and makes submersion easier.