“Walking on the Water - How it’s done without getting wet feet.“
We are shown a shady brook which is “the skating rink of the water striders.“ C/U of insects with long legs perched on the surface of some water - water boatmen? “How do they do it? The principle can be shown by stretching a rubber sheet over a frame - “ C/U of a man stretching a piece of rubber. He then presents to the camera a small frame which has a piece of rubber stretched across it and secured by nails.“ “Six pegs in a wooden block will serve as the feet of the water-striders.“ A little wooden block is moved around on top of the rubber. “From the under side - the feet of the water strider are exactly similar to the impress of the pegs - they dent the surface but do not penetrate - “ Shot from underneath the rubber with the pegs making an impression in the rubber.
“The pegs don’t pierce the sheet because they are supported by “surface tension“. So long as a drop of water is not pierced, it will support its own weight and a
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