Excellent thoughts, thanks!
I'm trying to come up with something that shows it's not just water. Deuterium does give off a red glow that looks way cool if you put it in a fusion reactor but I foresee complications with TSA if I try to travel with an unlicensed fusion reactor around my neck.
It is slightly heaver than water so perhaps incorporating some type of a balance scale concept would work.
Think, think think....
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- Taking it one step at a time.
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