By Jeremy Bernstein

ISBN-10: 0195092759

ISBN-13: 9780195092752

Albert Einstein didn't galvanize his first lecturers. they discovered him a dreamy baby with out an extremely promising destiny. yet a while in his early years he constructed what he referred to as "wonder" concerning the global. Later in existence, he remembered cases from his formative years - his fascination at age 5 with a compass and his advent to the lucidity and walk in the park of geometry - which may were the 1st symptoms of what was once to come back. From those usual beginnings, Einstein turned one of many maximum medical thinkers of all time. This illuminating biography describes in comprehensible language the experiments and progressive theories that flowed from Einstein's mind's eye and mind - from his idea of relativity, which replaced our perception of the universe and our position in it, to his look for a unified box concept that may clarify all the forces within the universe.This is a ebook in case you need to know extra: how Einstein lived and enjoyed, how he was once knowledgeable and earned a residing, the technological know-how and politics of his time.... Readers...will be absorbed during this tale of a outstanding guy. - VOYA"A energetic and noteworthy mirrored image of the fellow at the back of the general public determine. - Booklist"A accomplished, very smart, patiently-constructed advent to Einstein and his theories.... it really is amply illustrated with informative diagrams and perfect caliber black-and-white photographs. - institution Library magazine"

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Extra resources for Albert Einstein And the Frontiers of Physics

Example text

For the next 250 years, physicists spent their time elaborating the Newtonian system. It never seemed to occur to anyone—at least until Einstein—that Newton’s laws might actually be wrong. What would Newton and Einstein find to say to each other if they were to meet today? They did have a few things in common. Both made their fundamental discoveries at about the same age. Newton was 24 and Einstein, in the “miracle year” of 1905, was 26. Apart from their “genius,” both men also had the capacity to focus on a problem for years, simply refusing to give up.

The two are connected, since we can date or order a series of events by referring to clocks. That we can communicate with each other about such things means that at least to some degree, we all have a common sense of time. This common sense of time can be elevated to a principle of “absolute time,” a principle that was first clearly enunciated by Newton. ” As obscure as this definition of absolute time may seem, it does have consequences, and one of them is to make it possible, according to Newtonian 56 The Miracle Year physics, for a person to catch up with a light wave.

If we pick one of the high points along the path of the wave and measure the distance to the next high point, this distance is known as the “wave length,” and is usually denoted by the Greek letter lambda: λ. If it takes a time T for the wave to travel one wave length, or from one high point to the next, then the speed of propagation of the wave is λ/T. That is because speed equals distance divided by time, or: Speed = Distance/Time Suppose that I now decide to run alongside the wave. If I do so at the speed of propagation of the wave, I can keep text continues on page 52 48 The Miracle Year A SHORT HISTORY OF LIGHT THEORY I n the second half of the 17th century, the two dominant theorists in physics were Isaac Newton and the somewhat older Dutch physicist and astronomer Christian Huygens.

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Albert Einstein And the Frontiers of Physics by Jeremy Bernstein


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