I have an interesting finding in spacetime diagram - The area of the square grid for the rest frame O, is the same as the area of the rhombus grid for the inertial frame O'.(adsbygoogle = window.adsbygoogle || []).push({});

More specifically, the area of the square for frame O

(0, 0), (0, 1), (1, 1) and (1, 0) is 1

The area for the rhombus for frame O'

(0, 0), (vγ, γ), (γ+vγ, γ+vγ), and (γ, vγ) is also 1,

no matter what γ or v is.

Is this just a coincidence or does it have mathematics or physics basis?

Thanks!

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# Spacetime diagram grid area

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