fuse rating question

--- You shouldn't have done that, and you should never do it again.

The cover is probably part of the structure that keeps radiation from leaking out of the oven, and by running the oven with the cover removed you may have put yourself in danger by intercepting some of that radiation.

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--- They can travel forever.

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--- No. they're going at the speed of light.

-- John Fields Professional Circuit Designer

I see I can screw up even when I am looking directly at the info. The holes SHOULD be too small to pass any appreciable microwaves, BUT it is still good practice to at least slide the case down over the unit and attach at least one screw to act as a ground.

Jim

From what I know, they can not travel forever.

Cover has been replaced.

Well, eventually, some will be absorbed by interstellar gasses and objects they run into and the rest will become so weak as to blend into the background noise, but they are still there.

is visible light still there after I turn off the switch?

That just means your indicator dial has corroded in place.

Get it recharged.

Good Luck! Rich

Yes, of course. Whatever light escaped from your window, and out into space, is still on its trajectory out into infinity, as a photonic wavefront. Its pulse length is "however long the light was on".

Cheers! Rich

ah, I remember an Isaac Asimov story about a machine that could look back into time, by looking for the light from the event and therefore seeing the past. It really did not work for long ago, since the light got "blurry", but it was good for spying on things that happened just a little while ago. If was pessimistic though. Well, I do not like the whole spying thing either. Are you listening nsa?