![]() ![]() The problem with this is if it’s true then as the planet Earth moves forward through the ether and light is let off of a flashlight, candle (or whatever source of light you want), then the velocity of the Earth gets added to the velocity of light. Pamela Gay: Relativity is one of those things that actually came out of the ether, and I’ve always wanted to be able to say that about something.īack in the 1800s, scientists thought the entire universe (or at least the universe as we knew it then) was permeated by this substance called ether, and light propagated through the ether the same way sound propagates through air. So if you don’t understand it yet, our hope is by the end of today’s show, you’ll be able to finally wrap your head around relativity. ![]() Now we’re going to crank it up again with some concepts key to all things astronomical: relativity. Fraser Cain: After bending your brains with the Big Bang, we took pity on you and gave you a couple of weeks to recover with some lighter material: getting started in astronomy and meteor showers. ![]()
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