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KOENIG PHOTOMETER (3)
KOENIG PHOTOMETER (3)
ScnMaster
a
sound
impulse
measuring device. It has a small flame and a
spinning
mirror. By channeling
sound
impulses at the flame and
spinning
the mirror, one gets a pattern or
graph
of reaction of the
sound
.
—
PDC
Volume 3 Approved Glossary