Time: Yes, it's a dimension, but no, it's not like space

Re:Time: Yes, it's a dimension, but no, it's not like space by crazydoggers on Sunday October 20, 2024 @11:15AM (#41895838)

I believe that’s an accurate model, with the caveat that it’s all relative. There’s no universal reference frame. So for the photon and his pal photons, they experience time while you (in your reference frame sitting still) are the one moving at the speed of light and not moving through time.

Edit: See below, the photon doesn’t have its own reference frame so they still don’t experience time.

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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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Re:Time: Yes, it's a dimension, but no, it's not like space by aszantu on Sunday October 20, 2024 @03:14PM (#41897766)

I still don't get it, photon comes into existence and then slams into a thing for us to notice the existence. Between the being born and slamming into something time passes, no?

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Re:Time: Yes, it's a dimension, but no, it's not like space by hhejrkrn on Sunday October 20, 2024 @08:31PM (#41899675)

For everything around it .. But not for the photon?

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Re:Time: Yes, it's a dimension, but no, it's not like space by aszantu on Monday October 21, 2024 @01:41AM (#41900989)

how do you know?

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