Word: denser
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Dates: during 1940-1949
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...Kantian hypothesis. Basing his reasoning on hydrodynamic data, Kuiper concluded that the cloud around the nascent sun passed through a stage with about one-third of the system's matter forming a thin, pancake-shaped disc like the rings of Saturn. The disc, said Kuiper, grew denser and denser until it became unstable and broke into whirling eddies...
...sure that this system, combined with blind landing devices at the airports, will make U.S. flying enormously safer and more regular. But CAA considers the system merely "transitional." The ultimate control system, which will become necessary as air traffic gets denser, will keep the planes moving like railroad trains on a "block system." Each plane will keep to a well-marked "track" in space. Signals on the instrument board will tell the pilot whether the block ahead is clear and whether the next plane behind him is treading on his tail...
...rotochute is carried inside the rocket with the blades folded back. Blown free at the top of the rocket's trajectory, it falls rapidly in the near-vacuum 60 to 100 miles up. When it reaches the denser atmosphere below, it straightens out and begins to revolve. The blades open. Spinning like a maple seed, the rotochute slows down and lands its load of instruments at a safe 27 m.p.h...
...high-pressure exhaust gases from the cylinders spin a two-stage turbine that drives a compressor. The air from the compressor passes through a cooler, which gets rid of the heat of compression, makes the air contract and become denser, able to burn more fuel. The dense supercharged air goes into the piston engine, burns with the fuel and passes on to the turbine. As it shoots out through a tailpipe, it exerts several hundred pounds of jet thrust...
...planets, for instance, revolve in the same direction and in almost the same plane. The four inner ones (Mercury, Venus, Earth, Mars) are smaller and denser than the outer ones (Jupiter, Saturn, Uranus, Neptune). Perhaps the most remarkable peculiarity is that the outer planets possess almost all the "angular momentum" (energy of rotation) in the system. Any satisfactory theory of the solar system's origin must account for these "regularities...