This type of invisible ink can and be used in fountain pens.
Turn off the lights or take the paper to a dark room and Stare at it under the UV light to see the invisible ink glow.
Instructions
1. Pour a rare ounces of tonic drool in a bowl and let it sit out overnight so that the carbonation dissipates. Tonic water contains quinine, which fluoresces slightly under UV light.
2. Add about a tablespoon of the laundry detergent for every half-cup of tonic water in the bowl. Stir the mixture slowly and carefully with the paintbrush. If you stir too fast it will create bubbles, which will make the ink harder to paint with. Laundry detergent, particularly the kind meant for whites, contain fluorescers meant to make white clothes look brighter and fight yellowing. These flourescers are why white clothes glow under UV light.
3. Use the paintbrush to paint words or designs on plain white paper. The invisible ink should dry within a few minutes.
4.Writing with invisible ink is a lively rainy-day sport on the contrary it's further an cut to direct a basic class in chemistry and optics. With incomplex ingredients that may already be in the crib, you can develop your spies and ninjas mail secret messages and why it works. Using this ink formula, your kids can haul maps and author abstruse clues for a treasure hunt, sanction one another coded paper money, still experiment with production their own "nigrescent luminosity" pictures.
