/u/IS_JOKE_COMRADE's posts in /r/askscience

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If electricity is generated by spinning turbines, and there is no friction in outer space, can unlimited electricity be generated from spinning turbines in space?

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Is it possible to have a tattoo ink that response to the presence of alcohol in the bloodstream?

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I am designing an RFID ring. Unfortunately, the chip can’t interact with an electromagnetic field through a thin layer of gemstone (onyx, obsidian). Is there a gemstone-like substance that could serve as a ring-cap that doesn’t interfere with electromagnetism?

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Can someone help me understand fuel-cell "Electrical load factor" in submarines?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If electricity is generated by spinning turbines, and there is no friction in outer space, can unlimited electricity be generated from spinning turbines in space?	1
Is it possible to have a tattoo ink that response to the presence of alcohol in the bloodstream?	1
I am designing an RFID ring. Unfortunately, the chip can’t interact with an electromagnetic field through a thin layer of gemstone (onyx, obsidian). Is there a gemstone-like substance that could serve as a ring-cap that doesn’t interfere with electromagnetism?	1
Can someone help me understand fuel-cell "Electrical load factor" in submarines?	0