What do Lifeguards, Lasers, and Archery Fishing Have in Common?

[@northernlight1000]

I love how "homemade" these videos feel! They encourage me to do the math and stuff along at home myself, best way of learning

[@HadesKerbecs1]

This is the same thought process we used to derive snell's law. The refractive index exactly describes the ratio between the two speeds (but as the inverse). Amazing that you got so close to the actualy value with a simple experiment.

[@MathTheWorld]

Yes, I thought of having a follow up video to show how to get to Snell's law from what we did. Maybe I still will. It would have worked well to put it in this video, but we try not to cram too much in or make the vids too long.

[@jacobmohler3677]

These videos are so well done, and this channel is criminally underrated.

[@jcorey333]

This is such a cool video! I love the fact that light "knows" the ideal path to follow. Physics is interesting.

[@blitzvii322]

Wait, can this experiment also check for the speed of light through other mediums? Like maybe oil or some other transparent liquids? I doubt the speed will be the same

[@jadegregg8773]

Great question! I would think so! While doing research for this video I stumbled across a lot of information about the speed of light through glass as well which I thought was interesting. I wished I had a glass block to test it out on.

[@finminder2928]

How fast would a lifeguard need to do calculus to save any time? 😂

[@kenrickman6697]

That is an integral part of being a lifeguard.

[@duckymomo7935]

isn't this calculus of variations and path of least resistance/path of least time?