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A comment on Do we really travel through time with the speed of light?. Parent comment

Re:Do we really travel through time with the speed of light? by awongh on Monday August 31, 2020 @08:06AM (#24330579)
I recently learned this and it blew my mind because it had never occurred to me.

Another way to put it is that when you’re in a moving bus and you throw a ball towards the front of the bus, the ball is moving the speed you threw it plus the speed of the bus, but, when you shine a light, the photons from the light are moving the same speed as someone off the bus! That seems super weird.

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Re:Do we really travel through time with the speed of light? by davrosthedalek on Monday August 31, 2020 @08:14AM (#24330638)
Exactly. Now build a clock by bouncing the light between two mirrors, and think about how the clock looks like in the bus, and outside of the bus. -> special relativity.
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