Physics over easy : breakfasts with Beth and physics by Leonid V. Azaroff

By Leonid V. Azaroff

In easy-to-follow conversational language, this booklet finds the mysteries of physics and tells concerning the physicists who made it attainable, from the invention of the legislation of gravity by means of Isaac Newton and the development of the 1st electrical battery through Alessandro Volta, to the current century's improvement of solid-state electronics, nuclear fingers and nuclear reactors, lasers, and so on. The evolution of physics in the course of four Read more...

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No he did not. Nor did he know why this force decreased when their separation increased. Moreover, we don’t know the answer to your question even today. We have better insights into exactly what goes on in outer space, of course, but what is responsible for the gravitational attraction remains a mystery to the present time. It comes down to this: if you accept the idea that every object has an invisible and untouchable mass, then its motion, as well as its attraction for another object also possessed of a mass, has to obey Newton’s various laws.

If you place a fan or a paddle wheel in the path of the expanding steam, it will rotate the fan or wheel. By Fig. 7. A simple steam engine. 38 Physics Over Easy attaching some device to the rotating wheel you can get it to perform work, like pumping water or generating electricity, or whatever. ” Beth observed. ” “Quite true,” I agreed. “By enclosing the steam path somehow, the steam passing over the paddle wheel can be collected in a condenser where it cools and liquifies so that it can then be recirculated back to the boiler.

When the ice is heated, the molecules increase their kinetic energy progressively by vibrating back and forth until, at the melting point, they start to break loose and the solid ice turns into liquid water. As previously noted, the temperature of the ice-water mixture stays the same while the ice absorbs thermal energy in breaking up its orderly molecular array. ” “We can reorder the water molecules by putting them, say, into a refrigerator of some kind. ” “Now I know I don’t like these laws. The first law stated that we can’t get something for nothing - that’s discouraging enough - but the second law states that we shall always wind up with less than what we had at the outset.

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