Aeronautics, the science and practice of aircraft flight. (An aircraft is a vehicle that is supported in flight by its own buoyancy or by the action of air on its surfaces.) The term aeronautics takes in all phases of the design, construction, and operation of both lighter-than-air craft (airships and balloons) and heavier-than-air craft (such as airplanes, helicopters, convertiplanes, autogiros, gliders, and kites). The term aviation is usually restricted to powered, heavier-than-air craft.
Magnets are used in all kinds of applications, but do you ever wonder exactly why it sticks to certain metals? Find out the answer to this and other questions as we explore exactly how magnets work.
Booze, hooch, devil's brew. Whatever name you call it, alcohol is really just a combination of carbon, hydrogen and oxygen molecules. Test your knowledge of this simple compound with our quiz!