Please answer and explain to these in not less than 3 sentences. Thank you! 1. How can a sheet of copper be made to emit electrons thermionically? 2. Why do electrons cross the gap in a vacuum tube? 3. Besides tungsten, what other materials are used for cathodes in vacuum tubes? 4. What is the advantage of directly heated cathodes?
Please answer and explain to these in not less than 3 sentences. Thank you! 1. How can a sheet of copper be made to emit electrons thermionically? 2. Why do electrons cross the gap in a vacuum tube? 3. Besides tungsten, what other materials are used for cathodes in vacuum tubes? 4. What is the advantage of directly heated cathodes?
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter30: Atomic Physics
Section: Chapter Questions
Problem 1PE: Using the given charge-to-mass ratios for electrons and protons, and knowing the magnitudes of their...
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Please answer and explain to these in not less than 3 sentences. Thank you!
1. How can a sheet of copper be made to emit electrons thermionically?
2. Why do electrons cross the gap in a vacuum tube?
3. Besides tungsten, what other materials are used for cathodes in vacuum tubes?
4. What is the advantage of directly heated cathodes?
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