
How do we measure the speed of light?
Daniel and Kelly’s Extraordinary Universe
00:00
The Speed Limit of the Universe
How fast do emils travel? Like, if i rite you in emi and i hit send, does it go to you at the speed of light? Right? Because electricity and signals over telephone lines, they sort of go basically as fast as light, right? That's right. But we all know, of course, that emal doesn't arrive that quickly when you send it, because it's got to go through all sorts of le computers who do algorithms and wait on it or analyze it. And so for example, my email here, u c i sometimes takes ten minutes to get onend. That's not even the emas you send me, which take me hours to
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