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A Cartesian diver or Cartesian devil is a classic science experiment which demonstrates the principle of buoyancy (Archimedes' principle) and the ideal gas law.The first written description of this device is provided by Raffaello Magiotti, in his book Renitenza certissima dell'acqua alla compressione (Very firm resistance of water to compression) published in 1648.
They are deployed by releasing the weight from the buoy and allowing the line to unroll as the buoy floats to the surface. If the line is long enough the buoy will float at the surface with slack in the line and the weight will anchor it in place. If the line is too short the buoy will support the weight above the bottom and drift away. [24]
Profiling buoys are specialized buoys that adjust their buoyancy to sink at a controlled rate to a set depth, for example 2,000 metres while measuring sea temperature and salinity. After a certain period, typically 10 days, they return to the surface, transmit their data via satellite, then sink again. [ 18 ]
A float will descend to a predetermined depth where it will be neutrally buoyant. Once a certain amount of time has passed, most floats will rise back to the surface by increasing its buoyancy so it can transmit the data it collected to a satellite. A float can collect data while it is neutrally buoyant or moving through the water column. Often ...
Buoyancy (/ ˈ b ɔɪ ən s i, ˈ b uː j ən s i /), [1] [2] or upthrust is a net upward force exerted by a fluid that opposes the weight of a partially or fully immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid.
NEW YORK (Reuters) -The judge overseeing Donald Trump's criminal hush money case has put off ruling on whether the president-elect's conviction should be thrown out on immunity grounds, enabling ...
When to shop for car insurance. Beyond renewal time, major life changes and unexpected circumstances often call for a fresh look at your insurance options.
Freshman Jeremiah Fears scored a season-high 26 points, Jalon Moore added 24 and Oklahoma held off No. Arizona 82-77 on Thursday in the semifinals of the Battle 4 Atlantis. Duke Miles made a high ...
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