Very important, make sure the adult is doing this. Next we tried it over the burner on our stove. It would reveal the ink for the area directly over the flame, but that’s all.ĥ. I’m beginning to think it might have worked better if the papers were slightly dryer. I’m sure it’s a better message if the paper is completely soaked.Ĥ. While you’re at it make sure to completely saturate the paper. While you’re at it why not take pictures of the light and the wall?ģ. ![]() Honestly, we could have done this with one lemon, but each kid wanted their own lemon.Ģ. ![]() Cut your lemons in half and squeeze all the juice out of them into a bowl. Oh, and all documentary pictures taken for this experiment were taken by my kids today. Hypothesis: if you draw with the juice when it is exposed to heat it will turn brown and reveal your secret message. Lemon juice (I used lemons and squeezed out the juice, but a lemon juice bulb is a good option), paintbrush or q-tip (or a quill pen), matches, candle, hairdryer, a burner from your stove ![]() Materials needed for invisible ink lesson: They used the steam from a hot dog to reveal it and I forget what all else, so that got me curious if this would really work. In the book, they write secret messages to each other using invisible ink from lemon juice, and they used all sorts of things to reveal the ink. So, as I mentioned y esterday we read Invisible Inc Mystery of the Missing Dog.
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