Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 117
PLANE MIRROR.Apparatus: A mirror (No. 23). A rectangular block (No. 9). Arubber band to hold the mirror to the block. Two straight-edgedwooden rulers (Nos. 24a and 24b). A meas-uring-stick (No. 3). A sheet of thin whitepaper about 12 inches by 20 inches. A smallblock (No. 25). Attach the mirror to… … BEGULAR REFLECTION OF LIGHT. 105 \7* 3 directly over and parallel to this line, the middle of the mirror beingvery near the centre of the sheet. See Fig. 65. Draw on the sheet of paper in front of the mirror a triangle, eachside of which shall be several inches long, and no corner of whichshall be…
Physics
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