Cathode ray
oscilloscope
[Film Technology]
Oscilloscope, electronic instrument that records changes
in the voltage of an electric or electronic circuit by a trace of light on the
face of a cathode ray
tube (CRT). Oscilloscopes are widely used throughout
industry and in scientific laboratories to test and adjust electronic equipment
and to follow extremely rapid oscillations in electric voltages; the
oscilloscope is capable of following changes that occur within several
billionths of a second. Special converters attached to an oscilloscope can
convert mechanical vibrations, sound waves, and other forms of oscillatory motion into electrical impulses
that can be observed on the face of the CRT.
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