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Are People alone in the Universe

SETI: an Exercise in fatuous Whimsicality? Among the intelligentsia of our age, few scientists of international note have displayed more preoccupation with the idea of extraterrestrial intelligence than did the late Dr Carl Sagan. He wrote extensively on the subject…
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How Aircraft Propellers Work

The principle behind a propeller is just like the forces that work in an airfoil. The plane undergoes different aerodynamic forces that directly act on it including lift, drag, weight and thrust. Thrusting is mainly provided by the propeller’s action…
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Understanding Universal Law

Judging from what I have been reading on this site about Universal Law, I must have experienced a different academic upbringing than your average American student. Fact is, I am not American so I can’t speak for the education that…
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Are People alone in the Universe

If you have any sort of religion involving a God or gods and possibly angels and demons as well, you obviously would have to answer this question with a definite no! Whether other life or particularly intelligences inhabit other planets…
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How Aircraft Propellers Work

A propeller is a marvel of engineering that, with the exception of the invention of the internal combustion engine, is probably the most important breakthrough in allowing us to accomplish powered flight. Yet a propeller is nothing more than wings…
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