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mfb- t1_je40l8w wrote

Reply to comment by [deleted] in How does an ideal vacuum have a dielectric breakdown voltage of 10^12 MV/m? If there is nothing there, then how can electricity pass through it? by skovalen

OP is asking about the Schwinger limit. This has nothing to do with walls.

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[deleted] t1_je4dylt wrote

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mfb- t1_je4eu6y wrote

In practice you focus beams of electromagnetic radiation to collide with each other. You can't reach fields anywhere close to the Schwinger limit with charged walls, so again, this has nothing to do with walls.

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