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2
questions
3
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2
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How is mass defined by special relativity?
I am eagerly interested in all kinds of areas of physics. As the question of mass has been around for a pretty long time, I am interested about what modern physics namely special relativity says about ...
1
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1
answer
982
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Calculating an "apparent" speed of a beam in a medium
While thinking about relativity, one question sparked my curiosity. If we could observe the trajectory of a light beam by using some partially opaque medium, like smoke, to make it visible, we'd not ...
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