Ethiopian Singer: Sara Performs Her First Single Music Video | Song Title - MinLargleh | May 2019

Ethipia : across a gas taken in a discharge tube of a very low pressure (~ 0.001 torr) some
radiations are emitted from cathode. These radiations are called cathode rays. Fig 2.1,
shows emission of cathode rays in a discharge tube. At this stage the glass walls of
the discharge......

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