By Jerome Pohlen
Most sensible identified for his common conception of relativity and the recognized equation linking mass and effort, E = mc², Albert Einstein had an enduring impression at the global of technological know-how, the level of that's illuminated—along together with his interesting existence and precise personality—in this full of life historical past. as well as studying all approximately Einstein’s vital contributions to technology, from proving the life and measurement of atoms and launching the sphere of quantum mechanics to making versions of the universe that ended in the invention of black holes and the large bang conception, younger physicists will perform actions and suggestion experiments to carry his theories and concepts to existence. Such actions comprise utilizing dominoes to version a nuclear chain response, replicating the increasing universe in a microwave oven, growing blue skies and crimson sunsets in a soda bottle, and calculating the rate of sunshine utilizing a melted chocolate bar. feedback for extra examine, a time line, and sidebars at the paintings of alternative physicists of the day make this an exceptionally available source for inquisitive childrens.
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Extra info for Albert Einstein and Relativity for Kids
We sailed through the ether, you. light waves all around. indd 36 8/1/12 9:47 PM No, said Einstein. There is no ether. Motion can only be defined when relating two “reference frames” to each other. The first reference frame in the thought experiment above was your space capsule—Capsule A. The second reference frame was the other capsule— Capsule B. When you looked out and saw Capsule B pass by, which capsule was moving? You may have thought you were sitting still while Capsule B flew by. Relative Motion Y ou don’t have to go to outer space to do see sky out the windows around you, and (on your own observations on relative motion.
Einstein said no. The speed of light is constant no matter where you observe it. In other words, the famous Michelson-Morley experiment (see sidebar) wasn’t a failure. They had proven a fundamental aspect of nature, but they just didn’t realize it: the speed of light is constant. Einstein’s theory is explained in greater detail in the next chapter. For the time being, think of what it must have been like for Einstein to say that the scientific community was all wrong. He, sitting at his desk in the patent office, had come up with the right answer.
Einstein was correct. Time Slows Down as an Object Speeds Up And finally, as in the Time Dilation thought experiments, as an object speeds up, its internal clock appears to slow down relative to an observer at rest. According to the math, if that object were to reach the speed of light, its time would stop altogether, at least when viewed by a viewer at rest. Einstein claimed that this was one more reason it is impossible for an object to travel at the speed of light. Even stranger than an object getting shorter as it gains speed, Einstein determined that the object would gain mass.