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Quickk physics question

https://www.youtube.com/watch?v=kh2MaLfx2Wk&index=4&list=PLX2gX-ftPVXWA5TjEhVQSQQzZ-5_5Nui8
at around 3:48 why is theta4 the same as theta1
You have gone air->glass then glass->air

therefore air->air

therefore no angle change.
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h26
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Original post by Logan_eLF
You have gone air->glass then glass->air

therefore air->air

therefore no angle change.


Hey thanks but I was thinking more along the lines
50.PNG
so theta1 is equal to the blue angle and i get what you did but mathematically it doesn't make sense to me
lemme know your thoughts pls:smile:
Original post by h26
Hey thanks but I was thinking more along the lines
50.PNG
so theta1 is equal to the blue angle and i get what you did but mathematically it doesn't make sense to me
lemme know your thoughts pls:smile:


ur basically showing opposite angles, therefore, it is still the same. Draw a line 90 degrees to the box, that is the normal, and so this will be the same since the direction of energy transfer remains the same in air, therefore this creates the same angle.

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