Recent content by obliv1

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    Graduate Difficulty understanding invariant 'c' implications

    Thanks folks, really useful replies
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    Graduate Difficulty understanding invariant 'c' implications

    In our world where 'c' is large, most people intuitively understand Galilean addition of velocities at everyday speeds i.e. if someone stands 40m behind me and rolls a ball towards me at 10m/s (assuming we are not moving relative to each other) it takes 4s to reach me. If we repeat the...