Crossword clues for buoyancy
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Buoyancy \Buoy"an*cy\, n.; pl. Buoyancies.
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.
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(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.
Such are buoyancies or displacements of the different classes of her majesty's ships.
--Eng. Cyc. Cheerfulness; vivacity; liveliness; sprightliness; -- the opposite of heaviness; as, buoyancy of spirits.
Douglas Harper's Etymology Dictionary
1713, from buoyant + -cy. Figurative sense (of spirits, etc.) is from 1819.
Wiktionary
n. 1 (label en physics) The upward force on a body immersed or partly immersed in a fluid. 2 The ability of an object to stay afloat in a fluid. 3 (label en by extension) resilience or cheerfulness.
WordNet
n. cheerfulness that bubbles to the surface [syn: perkiness]
the property of something weightless and insubstantial [syn: airiness]
irrepressible liveliness and good spirit; "I admired his bouyancy and persistent good humor" [syn: irrepressibility]
Wikipedia
In science, buoyancy ( or ; also known as upthrust) is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. This pressure difference results in a net upwards force on the object. The magnitude of that force exerted is proportional to that pressure difference, and (as explained by Archimedes' principle) is equivalent to the weight of the fluid that would otherwise occupy the volume of the object, i.e. the displaced fluid.
For this reason, an object whose density is greater than that of the fluid in which it is submerged tends to sink. If the object is either less dense than the liquid or is shaped appropriately (as in a boat), the force can keep the object afloat. This can occur only in a reference frame which either has a gravitational field or is accelerating due to a force other than gravity defining a "downward" direction (that is, a non-inertial reference frame). In a situation of fluid statics, the net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body.
The center of buoyancy of an object is the centroid of the displaced volume of fluid.
Usage examples of "buoyancy".
They were circular disks, two kilometres in diameter when they matured, made from polyp that was foamed like a sponge for buoyancy.
I could not get around the fact that many of these other boats could rise faster than ours by the fact of their greater buoyancy, but I was none the less determined to reach the outer world far in advance of them or die a death of my own choosing in event of failure.
It is really one of the maladies of American democracy to be swept by these prairie fires of pseudo-scientifc fads, and throw itself into Eugenics or Anthropometric inquiry with the buoyancy of babies.
Legs found a polystyrene box, which they broke up and stuffed down their smocks for buoyancy.
I have also developed a mechanism that can heat and recondense the hydrogen gas to increase our buoyancy.
They altered their buoyancy, lifting from the long trenches they had made in the ooze and drifting on cold currents until they reached the maws of nearby subduction channels.
They altered their buoyancy, lifting from the long trenches they had made in the ooze and drifting on cold currents until they reached the maws of nearby subduction channels .
Flooding the hangar chamber of the DDS changed the buoyancy of the Archerfish by several tons.
The cerebrospinal fluid supplies a buoyancy that almost entirely neutralizes gravitational pull within the skull.
There was no spring in Condy that morning, no elasticity, none of his natural buoyancy.
Usually the dead Sperm Whale floats with great buoyancy, with its side or belly considerably elevated above the surface.
As the tanks emptied, Kaliningrad grew lighter and the forces of buoyancy began to move her upward.
He put on his diving hood, then slid his arms into his vestlike buoyancy compensator-the double bladders of which would draw their air from his tank-and fastened the quickrelease buckles of its cummerbund around his waist.
Unlike a raft, which depended upon the buoyancy of its structural materials to float, the principle of the Sharamudoi watercraft was to enclose a pocket of air within a wooden shell.
I inflated all twelve cones with air and I filled each buoyancy chamber with the requisite ten litres of sea water.