Hawkins, Victor Dean, 1875- · New York [etc.] Longmans, Green, and co. · leaf 112
FIG. 78. FIG. 79. Optical disk, showing reflection and refraction of light. The total reflection or right angle prism is often used inoptical instruments. The light strikes at greater than thecritical angle (Fig. 78). A semi-circular tank of glass may be used to show therefraction of light at the…
Physics
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