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A Favorite Abode of Science:

Santa Clara College and the Pursuit of Scientific Knowledge, 1851-1900

University Archives :: Exhibits :: A Favorite Abode of Science :: Crova's Apparatus
Pneumatics, Hydraulics, and Acoustics - Crova's Apparatus
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Crova's Apparatus
Crova's Apparatus, c. 1868, By Rudolph Koenig
Crova's apparatus was designed by Koenig for the purpose of "representing vibratory movements on the screen, with 8 disks." Turning the crank past a vertical slit caused the disks to rotate, while a beam of light from the optical system impinged on the slit intersections and showed the oscillatory motions. The propagation of a travelling wave, the reflection of travelling sound waves, the reflection of the movement of a continuous oscillation, the reflection of a standing wave, ether (transverse) waves, and the interference of two vibratory motions could be demonstrated by the apparatus.

Top Item#: RB.12 Photograph courtesy of Charles Barry, SCU
Lower image and text information courtesy of
"Historical Physics Teaching Apparatus"
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