Impenetrability
المؤلف:
GEORGE A. HOADLEY
المصدر:
Essentials of Physics
الجزء والصفحة:
P-9
2025-10-18
271
Space that is occupied by one portion of matter cannot at the same time be occupied by any other portion. This is a property of matter rather than of bodies.
Demonstration. - Push the closed end of a test tube into the water in a graduate that is partly full, as shown in Fig. 1. The difference between the readings of the water surface before and after the tube is inserted will give the volume of the submerged part of the tube, which is the same as that of the displaced water.
A nail driven into a block of wood pierces the block and pushes the substance of the wood together. The block is usually not increased in size, but the wood now occupies only part of the space it originally occupied.
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