New Method of Displaying Disturbance and Wave Propagation

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Abstract
The measured phenomenon modulates in intensity a horizontal line on a CRO screen. The vertical position of this line is electrically linked with the position of the detector (e.g., photomultiplier). If the phenomenon is repeated many times while the detector slowly moves, the individual lines fuse into an intensity modulated space-time diagram, similar to a TV picture. The method quickly provides accurate and full information of even very complicated and fast wave phenomena, and increases the signal-to-noise ratio by summarizing many independent measurements into a single picture. Examples of the use of the method for measurements of ionization waves in a discharge plasma are given.