Oscilloscope

Oscilloscope

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Credit: ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Caption: Oscilloscope displaying 'white noise'. Oscilloscopes use cathode ray tubes to graphically exhibit variations in voltage or electric current. A time base signal dictates the movement of a spot which travels horizontally across the screen, displaying a waveform. In the image there is a lot of activity, but no discernable pattern to the waveform. This is known as white noise.

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Keywords: amp, ampere, amperes, amps, analogue, analysing, displaying, electrical, electronics, equipment, measuring, oscilloscope, physical, physics, potential difference, sinusoidal wave, table, technological, technology, trace, volt, voltage, volts, white noise

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