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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 (author)2012-05-05

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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NeyS1 (author)BLUEBLOBS22018-03-11

how can we see the latter under the UV ing?

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Crazy atH (author)BLUEBLOBS22016-07-27

Can lime juice produce the same effect?

Or just lemons?

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kewlman (author)2011-05-16

try using a highlighter!!!

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NobodyInParticular (author)2009-02-15

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 (author)2009-02-15

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 (author)2009-02-15

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.

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