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The cathode-ray tube, also called Braun's electrometer, was invented by Ferdinand Braun in 1897. The cathode-ray tube was the technology behind most displays, including televisions and computer screens, for over 100 year... More »

A cathode ray tube works by sending electrons from the negatively charged cathode to the positively charge anode, which has a small tube to allow electrons to exit out in a focused line onto a screen. The screen is coate... More »

Thomson’s cathode ray tube experiments were a series of three tests that determined the existence of electrons. Thomson used the experiments, beginning with his invention of the cathode ray tube, to better understand the... More »

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Thomson’s cathode ray tube experiments were a series of three tests that determined the existence of electrons. Thomson used the experiments, beginning with his invention of the cathode ray tube, to better understand the... More »

A cathode ray tube works by sending electrons from the negatively charged cathode to the positively charge anode, which has a small tube to allow electrons to exit out in a focused line onto a screen. The screen is coate... More »

J.J. Thompson conducted his cathode ray experiment in 1897. Thompson had a long-lasting interest in the atomic structure, and this experiment resulted in the discovery of the electron. More »

The amount of electricity consumed by a TV on standby or while operating depends on the technology involved; rear projection TVs can use between 0.2 and about 48 watts per hour with an average between 6 and 7. CRT (catho... More »