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detourdog • yesterday at 10:48 PM • 3 replies • view on HN

My big question is why didn’t we just say the speed of light is exactly 300,000 meters per seconds when we redefined the foot.


Replies

jacquesm • yesterday at 10:49 PM

Speed of light in what?

I presume you mean in a vacuum. You could have only gotten that particular answer if you had redefined the meter as well in a fairly substantial way and I suspect a lot of people would have been upset if you attempted that.

amelius • yesterday at 11:01 PM

Might as well use Planck units then.

https://en.wikipedia.org/wiki/Planck_units

labcomputer • yesterday at 10:52 PM

Because then the distance between earth's pole and equator would no longer be 10,000 km.

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