Braun tube
(after Karl F. Braun, Ger. physicist– an evacuated glass vessel fitted with electrodes for producing a narrow beam of cathode rays that form a bright spot on a fluorescent screen placed at the end of the tube) ब्राऊन नलिका
(after Karl F. Braun, Ger. physicist– an evacuated glass vessel fitted with electrodes for producing a narrow beam of cathode rays that form a bright spot on a fluorescent screen placed at the end of the tube) ब्राऊन नलिका
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