Undergrad Gravity: Introduction to Einstein's General Relativity

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The discussion revolves around the updated edition of "Gravity: Introduction to Einstein's General Relativity," questioning whether it is a true new edition or simply a reissue by a different publisher. Participants note that a sample is available on Amazon, which suggests minimal changes from the original text. The focus is on whether the content has been significantly revised or if it remains largely the same. This reissue may appeal to new readers or those seeking a refreshed presentation of Einstein's theories. Ultimately, the distinction between a new edition and a reissue is crucial for potential buyers.
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On Amazon, you can view a sample. Looks like a "reissue" of the original.
 

Thread 'Am I understanding the concept of proper frame of reference?'

MOVING CLOCKS In this section, we show that clocks moving at high speeds run slowly. We construct a clock, called a light clock, using a stick of proper lenght ##L_0##, and two mirrors. The two mirrors face each other, and a pulse of light bounces back and forth betweem them. Each time the light pulse strikes one of the mirrors, say the lower mirror, the clock is said to tick. Between successive ticks the light pulse travels a distance ##2L_0## in the proper reference of frame of the clock...
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