cur: 1st, It may be reflected j2nd. It may be absorbed ; or,3rd. It may be transmitted. Note.—It may be partly reflected and partly absorbed, partly absorbedBud partly transmitted, or partly reflected and partly transmitted. REFLECTION. 25. The rays of heat, like those of light, may be collected… … Fig. 2. direction; and if these parallel rays be made to impinge upon asecond concave parabolic reflector (B), they become convergentand are reflected to a focus (D.). If a screen be interposedbetween the mirrors and some phosphorous be placed at D, uponwithdrawing the screen the phosphorous…
Physics
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