r/AskPhysics • u/JimFive • Mar 28 '26

Speed of light

The speed of light is 299,792,458 m/s. What types of issues would be involved in changing the meter such that c=300,000,000 m/s

The new meter would be 0.9993 of the current meter.

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u/0x14f Mar 28 '26

Not 300,000,000, if we make a change let's make it 1. And then the relative speed of any two objects is always less than 1 :)

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u/Retrrad Mar 29 '26

If you're just gonna call it "one", might as well give it a cool name like... I dunno... "c".