Science First Water Hammer

Item #: 1388782
$39.49 $29.62
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Science First Water Hammer is a device that presents an unusual property of water in an evacuated cylinder. When the hammer is held in vertical position with bulb at top and lifted and lowered in 1 quick motion, water falls in the tube making a very loud sound. Water behaves like a solid moving as a whole while showing that in a vacuum.