Word: experimental
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Dates: during 1970-1979
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Nowadays physicists rank quantum mechanics alongside relativity as one of the twin pillars of their science. But at its heart is an almost philosophical aspect that deeply troubled Einstein. It is the uncertainty principle, which says, for example, that it is impossible to tell both the exact position and the...
Einstein boldly disregarded the notion of the ether. Then he went on to state two postulates: 1) An experiment can detect only relative motion, that is, the motion of one observer with respect to an other. 2) Regardless of the motion of its source, light always moves through emp ty...
In demolishing New ton's basic assumption that time is absolute, that it is universally the same, and that it flows steadily from the past toward the future, Einstein used the following thought experiment: an observer standing next to a railroad embankment sees two bolts of lightning strike the tracks...
Meanwhile, Einstein's restless mind had turned from special relativity's uniform motion to the greater complexities of accelerated movements. These are motions involving changes in velocity: as when the earth's gravity draws an object toward the ground, the object's velocity increases by 9.8 meters (32 ft.) per...
In the latest issue of New West magazine, Ross discloses that he first conducted the Steps experiment in 1975. At that time he sent 21 pages of the book to four publishers. Results of this first total rejection were published in Harper's Bookletter, a now defunct biweekly. That...