Although many of us have MW ovens, I can name like one Saw movie and one DIY channel that showed it’s potential to melt things, and I watch\read a lot of gore and torture on the web. It won’t be used in a military context due to how power consumption and short distance make it useless. But in a Home Alone situation it seems promising, especially as a trap because you won’t stop anyone with that immidiately.

My qustions are:

  1. How a breaf exposure is dangerous, and can it be used not to harm but to scare off?
  2. How it’d be treated legally due to it’s weirdness?
  3. What are general downsides of that, like reflecting it back to the sender or dealing irreversible fatal damage etc?

I’m stupid at basic physics so I’m sure I miss something.

  • Eldritch@lemmy.world
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    4 months ago

    It can. But the inverse square law makes it not as useful as you might think. What you want is a maser.

    Microwave radiation isn’t ionizing. That’s the bad stuff. Once you leave the path of the radiation there will be no lingering effects other than burns you suffered while in the path. Microwave ovens were initially built to REVIVE cryogenically frozen hamsters. FCC questions can depend a lot on what’s in your proximity. Urban or suburban environment, be careful. If you’re on the back 40 they probably won’t care unless you’ve leased part of the property for a microwave transmitter tower.

  • domdanial@reddthat.com
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    4 months ago

    Since we don’t know where you live, nobody can tell you the laws.

    For actual home defense at less than lethal means, buy a taser or shotgun with beanbag rounds or mace. Anything homebuilt is unreliable and could get you in trouble with intent laws or weapon manufacturing laws.

    • andrew_bidlaw@sh.itjust.worksOP
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      4 months ago

      Good call.

      I don’t think there are a lot of experts in russian law, so I haven’t specified it to maybe hear some stories of when this got used and how it went.

      • domdanial@reddthat.com
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        4 months ago

        Yeah, I can’t even guess at Russian laws, I don’t even know if they are consistent throughout your (very large) country.

  • Troy@lemmy.ca
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    4 months ago

    Think about it. Your house is probably wired for a maximum of 100A (maybe more if newer). A microwave oven uses 10A, typically. The maximum power you could put into an array of household microwaves would be the equivalent of ten microwaves.

    Now if you considered all of this being converted to, say, an electric heater – you could probably heat a fairly large space with this much energy – probably even your house in a Minnesota winter if it was at all insulated. If you were to be able to direct this heat towards someone, it’d be like standing right in front of the furnace while it was on and blowing all of its heat at you. It’d heat you up real good, but you could always just leave that spot.

    But with 100A, you could power a lot of LED lights, and very bright ones too. Like airport runway level bright. You’re probably better off building something like that which you could shine at an intruder. Just don’t blind yourself during testing ;)

    • collapse_already@lemmy.ml
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      4 months ago

      Ah, but your house power would have no trouble charging a colossal bank of capacitors to provide a brief instantaneous kill shot. Also, I think the design would be improved if you added a wave-guided magnetron so that the energy was more directed, but I don’t know much about that - I am more of a laser person myself.

    • BearOfaTime@lemm.ee
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      4 months ago

      Really good point on power consumption.

      That said, any space heater I’ve used that draws 10A can’t heat water to boiling in 1 minute.

      So I guess something about how a microwave delivers that energy matters in this equation? (I’m thinking distance from the emitter).

  • bneu
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    4 months ago

    It would be pretty hard to hurt someone with microwaves from an MW oven. The reflections inside the oven are necessary to heat anything by any significant amount.

    Here is a guy doing all sorts of silly experiments with a microwave oven: https://youtu.be/3hBRxwQXmCQ