Sci-Fi Weapons - But For Real

Lasers, sonic blasters and robots are the stock-in-trade of a large part of the Sci-Fi universe. Even the more introspective and existential stories usually throw in a robot or two for good measure. Perhaps surprisingly (or maybe not, depending on your perspective) a lot of these types of things are here and now - for real.
DangerRoom

Makes you barf at a distance (think "sick stick" from Minority Report)

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