Physics · Explorer

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Law of reflectionRunning
Reflection deck. Reflected angle at 73.6 °. Total turn 107.6 °, Required turn 68 °. Currently total turn is over by 39.6 °.TUNINGINCIDENTREFLECTED73.6 °
t = 0.0s

Total turn

107.6°

Required turn

68°

73.6 °

Reflection deck. Reflected angle at 73.6 °. Total turn 107.6 °, Required turn 68 °. Currently total turn is over by 39.6 °.

What has to balanceθi=θr\theta_i = \theta_r

What is happening

You are called to a heliostat aiming daylight down a hospital light well.

The turned beam is well off its target. It has to be deflected through 68° in total, measured from the incoming ray round to the outgoing one.