electron tube in English

noun
1
an evacuated or gas-filled tube in which a current of electrons flows between electrodes.
For such a large array, an electron tube was chosen instead of a solid-state sensor because the cost per unit area was considerably lower than that of a solid-state detector.
noun

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1. What does Cathode mean? A negatively charged electrode, as of an electrolytic cell, a storage battery, or an electron tube

2. Cathode, negative terminal or electrode through which electrons enter a direct current load, such as an electrolytic cell or an electron tube, and the positive terminal of a battery or other source of electrical energy through which they return