# Why is the speed of light the speed of light?

**URL:** <https://boards.straightdope.com/t/why-is-the-speed-of-light-the-speed-of-light/575051>\
**Category:** Factual Questions\
**Created:** [March 17, 2011, 6:46pm UTC](https://boards.straightdope.com/t/why-is-the-speed-of-light-the-speed-of-light/575051 "2011-03-17T18:46:16Z")\
**Posts on this page:** 1\
**Showing post:** 39

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**Author:** ![Ring](https://avatars.discourse-cdn.com/v4/letter/r/6a8cbe/32.png) [@Ring](https://boards.straightdope.com/u/Ring)\
**Post date:** [March 18, 2011, 10:00pm UTC](https://boards.straightdope.com/t/why-is-the-speed-of-light-the-speed-of-light/575051/39 "2011-03-18T22:00:31Z")

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> [@Exapno\_Mapcase](#):
>
> OK, I just took another look at that thread.

I’m not quite following you. What is it that you’re trying to express in English versus math?

Let’s try, _ **“where does the energy in a fission reaction come from”?** _

The potential energy of the nucleus is converted to EM and kinetic energy.

Or: The binding energy is converted to EM and kinetic energy.

BTW I couldn’t find that thread, how about posting it.

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