Merchant, F. W. (Francis Walter), 1855-1937, Fessenden, Cortez, b. 1852 · Toronto : Copp, Clark · leaf 262
can be seen by an eye at B without disturbing the pieces ofcardboard, pass a thread through the holes and stretch it. Does the light in passing from the candle to the eye travel in astraight line ? Experiment 3. Cut a hole about one centimetre in diameter in a piece ofcardboard and mount the piece… … Fig. 195. 1 For manual training exercise, see Appendix, page 330. 254 PHYSICAL SCIENCE. Move the screen backwards and forwards and note changesin the illuminated circle on the screen. What evidence have you that light travels in straight lines ? 5- Ray, Pencil, and Beam of Light- A ray is the line…
Physics
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