Gilbert light experiments for boys . urmirror Arrange thewindow glass ver-tically, place a can-dle in front and an-other behind (Fig. 52) , and make therear candle coin-cide with the imageof the front the dis-tance from eachcandle to the mir-ror. Are they ex-actly equal? Draw a line on a piece of paper and call it the mirror line (Fig. 53) . Draw three lines across it, and perpendicular to it, at 2-inchintervals. Place the window glass vertically on the mirror line, place the front candle on each perpendicularin turn. Is its image candle always atthe same distance from the mirro
Gilbert light experiments for boys . urmirror Arrange thewindow glass ver-tically, place a can-dle in front and an-other behind (Fig. 52) , and make therear candle coin-cide with the imageof the front the dis-tance from eachcandle to the mir-ror. Are they ex-actly equal? Draw a line on a piece of paper and call it the mirror line (Fig. 53) . Draw three lines across it, and perpendicular to it, at 2-inchintervals. Place the window glass vertically on the mirror line, place the front candle on each perpendicularin turn. Is its image candle always atthe same distance from the mirror? You have proved here that animage is always the same distancebehind the mirror that the objectis in front; and that it is onpendicular drawn from theacross the mirror No. 28. Slanting a pencil in front of the verticalwindow glass (Fig. 54), and slantingtoward the glass. Make a second pencilof equal length coincide with the the image also slant toward themirror? It does, because each part of. Fig. 53. The candles are onthe same perpendicular a per-object
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscientificrecreation
