Thermodynamics > Thermal Expansion DCS# 4A30.46

TREVELYAN ROCKER



APPARATUS
trevelyan rocker
202-11-E6
piece of lead
202-11-E6
butane burner or hot plate
202-11-B
insulating glove
013B

DESCRIPTION
Heat the Trevelyan rocker in the flame or on a hotplate set to about 250º.  Then place it on the piece of lead.  As the lead beneath it heats and expands, the rocker vibrates audibly.  It may be necessary to tip the rocker by hand to get it started.  A tuning fork resonator box will make it louder.

 
REFERENCES
Sutton, H-24.

TPT September 1974, p 348

http://physics.kenyon.edu/EarlyApparatus/Acoustics/Trevelyan/Trevelyan.html

Phys. Rev. 22, 517–521 (1923)