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A comment on Time: Yes, it's a dimension, but no, it's not like space. Parent comment

Re:Time: Yes, it's a dimension, but no, it's not like space by Filligree on Sunday October 20, 2024 @11:17AM (#41895852)
Photons absolutely do not experience time. The spacetime interval of any photon is always zero, and the spacetime interval tells you how much time any particle experiences. Note that it’s invariant.
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Re:Time: Yes, it's a dimension, but no, it's not like space by crazydoggers on Sunday October 20, 2024 @11:19AM (#41895869)
Yes you’re right.. the photon has no reference frame of its own then.

So then that would just apply to massive objects with their own reference frames.

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