Fossil holothurians
Fossil holothurians
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DOI：
10.1126/science.35.894.274-a
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发表时间：
1912-01-01
期刊：
影响因子：
56.9
通讯作者：
Clark, HL
中科院分区：
文献类型：
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作者：
Clark, HL
一架飞机从周围密度较高的空气进入这些低密度区域之一，会毫无预兆地突然坠落，这仅仅是因为压力大大降低，飞机没有时间在这种较轻的介质中获得必要的速度。巨大的压力差必然会引起气压计的巨大变化，但这种突然的变化从来没有在公开场合出现过。此外，可以证明，使压力变化达到总压力变化的十分之一所必需的大气运动（旋转）将是最具破坏性的暴力，但这是一本如此普遍有益的书的一个小缺点。基本航空学阿尔伯特·P·瑟斯顿著。惠特克公司，126.这是一个非数学的，但清楚地书面帐户上的行动，空气对运动的表面，平面和曲面，以及应用这些原则在设计和操作的飞机。这本书虽然简单，但似乎没有错误，可以推荐给那些希望得到关于飞机一般活动的可靠信息，但没有时间对它们进行真实的研究的人。WJ Humphreys
An aeroplane entering one of these low density regions from the air of higher density around it, will suddenly fall without any warning, merely because the pressure has enormously decreased, and theaeroplane hasnot had time to attain the requisite velocity of support in this lighter medium. Enormous differences in pressure must cause enormous changes in the barometer, but such sudden changes are never found in the open, and, besides, it can be shown that the movement (whirl) of the atmosphere necessary to produce a change of pressure amount-ing to one tenth of the total would be of most destructive violence.But this is a small fault to find with a book so generally helpful. Elementary Aeronautics. By ALBERT P. THURSTON. Whittaker and Co., 126. This is a non-mathematical but clearly written account of the action of air upon moving surfaces, plane and curved, and the application of these principles in the design and operation of aeroplanes. While both elementary and brief, it seems to be free from errors, and can be recommended to those who wish some reliable infor-mation about the general action of aero-planes, but have not the time to make a real study of them. WJ HUMPHREYS