But then, it does raise the question: What, worth saying, isn't already covered by an oscilloscope in the midst of a song?
Later messages had been picked up by radio telescope and converted to appear as symbols on the oscilloscope screen.
Rick indicated a circle of white plastic, scaled like the face of the oscilloscope.
He turned it slightly then began watching the oscilloscope closely.
Next, of course, an oscilloscope to check the pulse as it was beamed out.
The oscilloscope blurred until, by great effort, he brought it into focus again.
David MacHeath watched a blue line wriggle its way erratically across the face of an oscilloscope.
The oscilloscope flickered as he readjusted, a new trace appeared.
He sat in a dimly-lighted room, facing three oscilloscope screens.
oscilloscope os·cil·lo·scope (ə-sĭl'ə-skōp')
An electronic instrument that produces an instantaneous trace on the screen that corresponds to oscillations of voltage and current.
An electronic instrument used to observe and measure changing electrical signals. The amplitude of the signal as it varies with time is displayed graphically on a screen as a line stretching from left to right, with displacements up and down indicating the amplitude of the signal. Oscilloscopes are used to diagnose problems in electronic signal-processing devises, such as computers or stereos, and to monitor electrical activity in the body, such as that of heartbeats.