canal ray

noun Physics.

positive ray.

Origin of canal ray

First recorded in 1900–05

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British Dictionary definitions for canal ray

canal ray

noun

physics a stream of positive ions produced in a discharge tube by allowing them to pass through holes in the cathode

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012