Uploaded May 2020 | Updated September 2026, 2 weeks ago

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In 1915, Albert Einstein predicted light escaping a gravity well would be shifted in frequency. More than 40 years later a brilliant experiment was devised to test this theory. How did it work it work, and did it confirm or refute relativity?



Outro provided by SciStrikling:

youtube.com/channel/UC1WSUPU_8Ps7efqqwiIibTA
youtube.com/channel/UCvMB0MKUIe851HOhlEJDC_A



References:

What The Physics?!
youtube.com/watch?v=FdPZQEc1t6U


What is Light?
youtube.com/watch?v=IXxZRZxafEQ


How Gravity Works.
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