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how can i make invisible ink which is visible under UV light? Answered

how can i make invisible ink which is visible under UV light?

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BLUEBLOBS2

6 years ago

Take a paint brush. Soak it in some lemon juice. Paint on a piece of paper. Wait until you can't see any of the lemon juice on the paper. If you look at it under a UV light, it is visible!
I hope that helps.
-BLUEBLOBS2

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NeyS1BLUEBLOBS2

Answer 8 months ago

how can we see the latter under the UV ing?

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Crazy atHBLUEBLOBS2

Answer 2 years ago

Can lime juice produce the same effect?

Or just lemons?

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kewlman

7 years ago

try using a highlighter!!!

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NobodyInParticular

9 years ago

Many laundry detergents and especially color-safe bleach are loaded with UV fluorescent dyes. The quinine in soda water glows weakly too. Your best bet is probably a glow in the dark paint, as I mentioned over here.

Try carrying a black light around your house at night. You might discover something you already have.

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shehabshameer

9 years ago

your comment got me thinking.. since all white substances glow under uv light maybe we could break something down and make a white paste or ink...

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BeanGolem

9 years ago

It'd be cool to see if you could make some UV ink from flower petals that give off UV light! Now that would be an interesting I'ble.

Anyway... not sure how.