Gilbert light experiments for boys . 80 GILBERT BOY ENGINEERING. Fig. 124. A broken mirror How Deep is the Water? If you have gone swimming invery clear water you know that it always looks shallower thanit is. If the water is at the same depth everywhere it will lookto you shallower in the distance, for the reasons givenabove. How Tall are You to a Fish? If you are 6 feet tall a fish(Fig. 126) sees you as 8 feet tall, because the curved waves fromyou are made less curved in water and, therefore, appear tocome from a more distant point. Experiment No. 75. Breaking a pencil without touching it.L
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Gilbert light experiments for boys . 80 GILBERT BOY ENGINEERING. Fig. 124. A broken mirror How Deep is the Water? If you have gone swimming invery clear water you know that it always looks shallower thanit is. If the water is at the same depth everywhere it will lookto you shallower in the distance, for the reasons givenabove. How Tall are You to a Fish? If you are 6 feet tall a fish(Fig. 126) sees you as 8 feet tall, because the curved waves fromyou are made less curved in water and, therefore, appear tocome from a more distant point. Experiment No. 75. Breaking a pencil without touching it.Look at a pencil in a slanting direction through a bottle ofwater with flat sides or through the edges of the glass plate.Does it appear to be broken into three parts? Why? GILBERT LIGHT EXPERIMENTS 81