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تسجيل

The Velocity of Sound in Solids

المؤلف:  GEORGE A. HOADLEY

المصدر:  ESSENTIALS OF PHYSICS

الجزء والصفحة:  p-200

2025-11-13

682

is so great that in measuring it directly the stations must be far apart. Measurements have been made, however, and the velocity in copper has been found to be about 11.1 times as great as in air, and in steel wire 15 times as great.

If the ear is placed close to a long wire, or to a rail of a railroad, a blow struck upon the wire or rail at a distance will be heard twice, first through the solid, and then again through the air.