Is the speed of light a true constant?

How does science work? And what's all this about quantum mechanics?

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Philosophy Explorer
Posts: 5635
Joined: Sun Aug 31, 2014 7:39 am

Is the speed of light a true constant?

Post by Philosophy Explorer » Sat Jun 02, 2018 1:07 am

My online encyclopedia pegs the speed of light at about
300,000 km/s with which I'm in agreement with. The speed of light can't be exceeded in a perfect vacuum (but empty space doesn't exist due to QM) which I'm also in agreement with, theoretically speaking.

Now going back to the time of the Big Bang (a slight joke here since time didn't exist at the beginning), my understanding is the speed of light was different back then. If so, what was going on with light and how did it settle at its current constant and can it change in the future?

🇺🇸PhilX🇺🇸

gaffo
Posts: 1167
Joined: Mon Nov 27, 2017 3:15 am

Re: Is the speed of light a true constant?

Post by gaffo » Sat Jun 02, 2018 4:43 am

Philosophy Explorer wrote:
Sat Jun 02, 2018 1:07 am
my understanding is the speed of light was different back then.

why is that you understanding?

Philosophy Explorer wrote:
Sat Jun 02, 2018 1:07 am
If so, what was going on with light and how did it settle at its current constant and can it change in the future?

🇺🇸PhilX🇺🇸
I can't answer the above until i know why you think the above above was so.

than maybe we can discuss.

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