A stroboscopically illuminated turntable is described; accurate and easily manipulated variation of the flashing frequency relative to the turntable frequency is achieved by photoelectric triggering of the lamp. The device is suitable for both visual and photographic evaluation of objects that may possess ``hidden'' degrees of radial (rotational) symmetry.
REFERENCES
1.
2.
General Radio Corporation, Concord, Mass.
3.
F. M.
Forte
, A. V.
Nichols
, and R. M.
Glaeser
, Chem. Phys. Lipids
2
, 396
(1968
).
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© 1969 The American Institute of Physics.
1969
The American Institute of Physics
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