Secret Message - Sick Science #070

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Secret Message - Sick Science #070

Learn more at http://www.stevespanglerscience.com/experiment/secret-message-heat-frict... Give that special someone a note that requires the heat of a romantic candle to decode the message. You won't believe what the ink in this pen will do. Your message can appear or vanish on command... and most people don't even know that the ink works this way.

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