Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 119
ction be-comes greater than 90°.This makes the refractedray return into the samemedium in which it en-tered. But this is reflec-tion instead of refraction,and so the ray must obey the law of reflection, making theangle of reflection (r2) equal to the angle of incidence (^). This is called total… … Figure 87. — Diagram ExplainingTotal Reflection. PRISMATIC WINDOW GLASS 109 < => ■ pf^ \. C\p * PK ^®^ \ 7^ * « > Figure 38. — Positions of Prisms in aLighthouse Reflector. It must be noted that total reflection takes place onlywhen the ray is passing from a dense to a rare medium.…
Physics
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