Gilbert light experiments for boys . 18 GILBERT BOY ENGINEERING. Fig. 23. You see an inverted image of thecandle light from the flametravels in a straight lineto your eye. Close one eye and lookat any part of some otherobject, then again movethe book across thestraight line from thepart to your eye. Doyou find again that youcannot see the part whenthe book has crossedthe straight line between the part and your eye? Cut three pieces of cardboard about 5X3, punch a small holein each at the same height, stand them upright on the table, placea candle flame in front of an end hole, and look at the
Gilbert light experiments for boys . 18 GILBERT BOY ENGINEERING. Fig. 23. You see an inverted image of thecandle light from the flametravels in a straight lineto your eye. Close one eye and lookat any part of some otherobject, then again movethe book across thestraight line from thepart to your eye. Doyou find again that youcannot see the part whenthe book has crossedthe straight line between the part and your eye? Cut three pieces of cardboard about 5X3, punch a small holein each at the same height, stand them upright on the table, placea candle flame in front of an end hole, and look at the flamethrough the three holes (Fig. 22). Shift the cardboards one ata time. Do you find that you can see the flame only when theholes are in a straight line? Note. You will show later thatlight is bent out of the straight linewhen it is reflected from a mirror andwhen it is refracted in passing fromair to water, air to glass, and so on. You have shown here that light,which is not reflected or refracted,travels in a straight line from theobject to your eye. Expe
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscientificrecreation
