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buoyancy    音标拼音: [b'ɔɪənsi]
n. 浮力;轻快;乐观

浮力;轻快;乐观

buoyancy
n 1: cheerfulness that bubbles to the surface [synonym: {buoyancy},
{perkiness}]
2: the property of something weightless and insubstantial [synonym:
{airiness}, {buoyancy}]
3: the tendency to float in water or other liquid
4: irrepressible liveliness and good spirit; "I admired his
buoyancy and persistent good humor" [synonym: {irrepressibility},
{buoyancy}]

Buoyancy \Buoy"an*cy\, n.; pl. {Buoyancies}.
1. The property of floating on the surface of a liquid, or in
a fluid, as in the atmosphere; specific lightness, which
is inversely as the weight compared with that of an equal
volume of water.
[1913 Webster]

2. (Physics) The upward pressure exerted upon a floating body
by a fluid, which is equal to the weight of the body;
hence, also, the weight of a floating body, as measured by
the volume of fluid displaced.
[1913 Webster]

Such are buoyancies or displacements of the
different classes of her majesty's ships. --Eng.
Cyc.
[1913 Webster]

3. Cheerfulness; vivacity; liveliness; sprightliness; -- the
opposite of {heaviness}; as, buoyancy of spirits.
[1913 Webster]


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  • Buoyancy - Wikipedia
    Buoyancy ( ˈbɔɪənsi, ˈbuːjənsi ), [1][2] or upthrust, is the force exerted by a fluid opposing the weight of a partially or fully immersed object (which may be also be a parcel of fluid) In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid
  • Buoyancy | History, Science, Applications | Britannica
    Buoyancy, tendency of an object to float or to rise in a fluid when submerged This fluid can be either a liquid or a gas A popular story suggests that the concept of buoyancy was discovered by the Greek mathematician Archimedes while he was taking a bath
  • Buoyancy Experiments for Kids: Easy Science Activities
    Shark Buoyancy – Animal Science Experiment This shark buoyancy experiment from Forgetful Momma is a fun, hands-on way for kids to learn how sharks stay afloat By filling balloons with different substances like oil and water, children can observe how varying densities affect buoyancy, simulating the role of a shark’s oil-rich liver
  • Buoyancy – The Physics Hypertextbook
    When an object is immersed in a fluid, the pressure on its bottom is greater than the pressure on its top This results in an upward force called buoyancy
  • BUOYANCY Definition Meaning - Merriam-Webster
    The meaning of BUOYANCY is the tendency of a body to float or to rise when submerged in a fluid How to use buoyancy in a sentence
  • 7. 2: Buoyancy - Physics LibreTexts
    The buoyancy force on an object in a fluid equals the weight of the fluid displaced by that object As simple as this seems, it is very easy to get confused about this force The main source of confusion tends to be distinguishing the buoyancy force from the net force on the object (which also experiences gravity)
  • 15. 2: Buoyancy - Physics LibreTexts
    In this section, we examine how the pressure gradient in a fluid leads to a force of buoyancy on an object that is immersed in the fluid
  • Buoyancy and Buoyant Force: Definition, Examples, and Formula
    What is Buoyancy When an object is immersed in a fluid, wholly or partially, the fluid exerts an upward force opposite its weight This phenomenon is known as buoyancy, and the upward thrust is known as the buoyant force A characteristic of buoyancy is that it determines whether an object will float or sink
  • Buoyancy: Definition, Causes, Formula Examples - Sciencing
    Without the buoyant force, fish could not swim, boats could not float and your dreams of flying away with a handful of helium balloons would be even more impossible In order to understand this force in detail, you must first understand what defines a fluid, and what pressure and density are
  • Buoyancy - Science Primer
    The buoyancy of an object is its tendency to float on or rise in a liquid An object that floats in water is said to be positively buoyant An object that sinks is negatively buoyant





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