• Grimy@lemmy.world
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    1 day ago

    If you curve the aluminium foil somehow, you can actually refelct it back. They did tests on youtube where they used a flipped riot shield and it work.

    • CheeseNoodle@lemmy.world
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      1 day ago

      Sounds like you could make a curved protest sign with plywood and then hide some foil between the plywood and a paper/cardboard layer for a fairly inconspicuous shield that can block and even reflect both microwave and sound cannons.