Gilbert light experiments for boys . Fig. 65. You see the candle burning in water long and 3^4 incheswide and high. Cutthe box into two equalparts at an angle of45° (see 1, Fig. 70),turn the halves as in2, cut a hole in onehalf, its center being2 inches from the two trapdoorsand attach to each aloop of cord for open-ing it. Now insert thewindow glass at the division, see 3. Now to have fun with your friends, hide the box behind alarge sheet of paper or cardboard and have your friends lookthrough a hole in the paper or cardboard into the hole inthe box. Have the box in a good light and
Gilbert light experiments for boys . Fig. 65. You see the candle burning in water long and 3^4 incheswide and high. Cutthe box into two equalparts at an angle of45° (see 1, Fig. 70),turn the halves as in2, cut a hole in onehalf, its center being2 inches from the two trapdoorsand attach to each aloop of cord for open-ing it. Now insert thewindow glass at the division, see 3. Now to have fun with your friends, hide the box behind alarge sheet of paper or cardboard and have your friends lookthrough a hole in the paper or cardboard into the hole inthe box. Have the box in a good light and have different objects be-neath the trapdoors. If you now open one trapdoor, the objectbeneath is seen by your friends. If now you close the first doorand open the second, the object will appear to be transformed into the other ob-ject. Use an emptyglass and a glass halffull of milk and youcan make the tumblerempty and fill atwill. You can makemany other very fun-ny transformations. Fig. 66. You see the candle burning in the boys h
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscientificrecreation
