Refraction Lab

Created by Mr Lau Chin Hang

Beam

Angle of incidence i40.0°

Outside

n₁1.000

Block

n₂1.500

Block thickness150 px

—

sin i ÷ sin r

TOTAL INTERNAL REFLECTION

critical angle (block → outside)	—
exit angle	—
lateral shift	—
reflected at entry	—

Drag the torch to change i. Drag the small dot on the top face to move where the beam enters. Reflected rays are dimmed by the Fresnel coefficient.