Physics · Explorer

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Law of reflectionRunning
Reflection deck. Incident angle at 73.6 °. Angle between the rays 147.2 °, Required turn 68 °. Currently angle between the rays is over by 79.2 °.TUNINGi = 73.6°r = 73.6°needed 34°
t = 0.0s

Angle between the rays

147.2°

Required turn

68°

Angle between the rays is over by 79.2 °

73.6 °

Reflection deck. Incident angle at 73.6 °. Angle between the rays 147.2 °, Required turn 68 °. Currently angle between the rays is over by 79.2 °.

What has to balanceδ=2θi\delta = 2\theta_i

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.