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Trigger2_2000@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

With sufficient voltage, everything is a conductor.

With insufficient voltage, everything is an insulator.

Neither may be conducive to those roles, but everything has some conductivity and some resistance (super conductors being a possible exception).

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big_fat_fluffy@leminal.space ⁨23⁩ ⁨hours⁩ ago
How about in vacuum? Do you get fancy arcs or glows or what?

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- MataVatnik@lemmy.world ⁨23⁩ ⁨hours⁩ ago
  
  In typical conditions, an electrical arc forms when the electric field strength exceeds the dielectric strength of the medium (like air). In a vacuum, there is no medium to ionize, which theoretically makes it difficult for an arc to form. However, electricity can still arc in a vacuum under certain conditions, such as when high voltages are involved or when the electrodes are extremely close together.
  
  peacepower.ca/…/can-electricity-arc-in-a-vacuum#:….
  
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  - big_fat_fluffy@leminal.space ⁨23⁩ ⁨hours⁩ ago
    I was thinking neon lights. I mean that’s basically an arc, just spread out. I think I heard that there’s a glow in vacuum too, just not as nice as with neon.
    
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    Trigger2_2000@sh.itjust.works ⁨15⁩ ⁨hours⁩ ago
    Well, a quick search turned up this: Vacuum Arc
    
    However, like the above comment, it seems to refer to freeing electrons from the conducts, so, IMHO, you no longer have a vacuum.
    
    If you could somehow maintain a perfect vacuum; I wonder how this concept Virtual particle would come into play (or if it would at all).
    
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