Physics · Explorer

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Refraction pathsRunning
Optics bench. Incident angle at 10.2 °. Incident side 0.177 , Exit side 0.705 . Currently incident side is short by 0.528.TUNINGn₁ = 1n₂ = 1.33needed 32°θ₁ = 10.2°θ₂ = 7.65°
t = 0.0s

Incident side

0.177

Exit side

0.705

Incident side is short by 0.528

10.2 °

Optics bench. Incident angle at 10.2 °. Incident side 0.177 , Exit side 0.705 . Currently incident side is short by 0.528.

What has to balancen1sin⁡θ1=n2sin⁡θ2n_1\sin\theta_1 = n_2\sin\theta_2

What is happening

You are called to a laser survey line entering a flooded tunnel.

The beam is missing the marker on the tunnel floor. Once it is inside the water it has to run at 32° to the normal, water is 1.33, air is 1.00, and the angle it strikes the surface at is wrong.