Editing Talk:2817: Electron Holes
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I must admit... I'm not entirely convinced that one _couldn't_ build an electron hole beam. It would probably be called a quasibeam, but I think it could be done. [[Special:Contributions/162.158.175.61|162.158.175.61]] 05:11, 19 August 2023 (UTC) | I must admit... I'm not entirely convinced that one _couldn't_ build an electron hole beam. It would probably be called a quasibeam, but I think it could be done. [[Special:Contributions/162.158.175.61|162.158.175.61]] 05:11, 19 August 2023 (UTC) | ||
: You could clearly do this if you fired a beam of physical material to carry the holes. You could also find a way to stimulate the production of holes at a distance, maybe by inducing static charge with electromagnetic emission. [[Special:Contributions/162.158.62.192|162.158.62.192]] 00:49, 21 August 2023 (UTC) | : You could clearly do this if you fired a beam of physical material to carry the holes. You could also find a way to stimulate the production of holes at a distance, maybe by inducing static charge with electromagnetic emission. [[Special:Contributions/162.158.62.192|162.158.62.192]] 00:49, 21 August 2023 (UTC) | ||
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Would an electron "vacuum" be an electron hole gun? [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 05:30, 19 August 2023 (UTC) | Would an electron "vacuum" be an electron hole gun? [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 05:30, 19 August 2023 (UTC) | ||
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I firmly believe the printer deserved it. It knows what it did. [[Special:Contributions/162.158.19.95|162.158.19.95]] | I firmly believe the printer deserved it. It knows what it did. [[Special:Contributions/162.158.19.95|162.158.19.95]] | ||
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Electrical current was defined as the flow of positive charge carriers before it was understood that the negative charge carriers (electrons) were what was moving. When talking about semiconductor physics, this became a problem because we’re very concerned about what particles are actually moving around, so the mathematical fiction of “hole flow” was invented so we wouldn’t have to use negative signs everywhere in the math. An electron hole is a property of p-type semiconductors, a place where electrons can move into, which can also be described as the nonsensical but more mathematically convenient flow of holes in the opposite direction. By analogy, if you had a children’s shape-sorting box, you could build a catapult that threw around the blocks, but you couldn’t build something that threw around the holes in the lid that the blocks fit into. | Electrical current was defined as the flow of positive charge carriers before it was understood that the negative charge carriers (electrons) were what was moving. When talking about semiconductor physics, this became a problem because we’re very concerned about what particles are actually moving around, so the mathematical fiction of “hole flow” was invented so we wouldn’t have to use negative signs everywhere in the math. An electron hole is a property of p-type semiconductors, a place where electrons can move into, which can also be described as the nonsensical but more mathematically convenient flow of holes in the opposite direction. By analogy, if you had a children’s shape-sorting box, you could build a catapult that threw around the blocks, but you couldn’t build something that threw around the holes in the lid that the blocks fit into. | ||
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: For sure you can make a beam of positively charged ions - and that's the first thing I thought of with the "electron hole gun". | : For sure you can make a beam of positively charged ions - and that's the first thing I thought of with the "electron hole gun". | ||
: But . . . the context pretty much says that the gun is sending the holes only, without any surrounding matrix. That is what is "impossible". [[Special:Contributions/162.158.175.133|162.158.175.133]] 18:11, 22 August 2023 (UTC) | : But . . . the context pretty much says that the gun is sending the holes only, without any surrounding matrix. That is what is "impossible". [[Special:Contributions/162.158.175.133|162.158.175.133]] 18:11, 22 August 2023 (UTC) | ||
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== Who is firing the beam? == | == Who is firing the beam? == |