how do you make invisable writing using a black light?

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i need to make some writing that doesnt show up without a black light. what works?

2007-01-09 09:05:53 · 4 answers · asked by Ayame 1 in Science & Mathematics ➔ Other - Science

For black light, you need a special "ultraviolet" ink.
Check the "Wiki" link for other "invisible ink" possibilities

2007-01-09 09:14:00 · answer #1 · answered by Yahzmin ♥♥ 4ever 7 · 0⤊ 0⤋

As a child I used lemon juice, it should show up under black light.

2007-01-09 09:30:28 · answer #2 · answered by car 3 · 0⤊ 0⤋

Lemon juice does the trick I believe.

2007-01-09 09:08:43 · answer #3 · answered by woodysbeard 2 · 0⤊ 0⤋

laundry detergent will do it.

2007-01-09 09:13:20 · answer #4 · answered by Jennylind 2 · 0⤊ 0⤋