Wednesday, March 2, 2022

Angle of incidence = Angle of reflection

 


7 comments:

  1. Not dissimilar to how gamma rays from the fissile Plutonium get focused on the Deuterium-Tritium fuel in an H-bomb...so they say.

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  2. Ah, the ellipse, neat stuff huh? Great animation, thanks, wish we had had this back in the long ago past when I studied math. It certainly illustrates what could only be described with lines on a blackboard.

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  3. Perhaps it is more accurate to say that Angle of Incidence Determines the Angle of Reflection - not equals.

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  4. Make a pool table like that, and demonstrate it IRL, rather than animation.

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  5. This is the principle behind the whispering gallery. There is supposedly a church somewhere in Europe, IIRC where the confessional is at one focal point and the other is out in the pews, or some such.

    Hilarity ensues....

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  6. When I was a kid, I school-visited a big-city science museum, that had, amongst other things, a pair of 10 foot or so, parabolic dishes at opposite ends of the room, easily a 100 feet or so apart, with noisy exhibits in between.

    They were aimed at each other across the room, and raised up a bit for a clear "view". 2 people could converse in normal voices, as though face to face, but the person less than a foot away (out of the focal point) could not hear the person at the other end of the room.

    Neat stuff, when you're 10 years old.

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