Science Memes

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Theoretical Physics (mander.xyz)

submitted 6 months ago by [email protected] to c/[email protected]

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[–] [email protected] 8 points 6 months ago* (last edited 6 months ago) (1 children)

I think a lot of them still rely on intuition and human level thoughts experiment. See The Feynman Lectures on Physics for a physicist using intuition. For example, when he explains the Fermat Principe with the lifeguard problem: the path of least time running on the beach and swimming to the victim is not the least distance. If you consider that you run faster than you swim, then you should run a bit further so you swim a bit less. This is analogous to the bending of a light ray (refraction, "broken" stick) when it enters water.

Einstein is also famous for those: https://en.wikipedia.org/wiki/Einstein's_thought_experiments

[–] geogle 0 points 6 months ago

I always use the example of driving around town. The fastest route is usually not the surface roads linking A to B along the shortest line, but a route that includes a highway with a faster route. Longer drive length, but shorter overall duration.