Invisablel writing? best answer will be given.! 10PT?

Question

Im making a movie and i need to writ some thing on a peace of paper in invisablel some thing.

Can anyone help me?

I need to be able to read it later on in the movie

Kinda like national treashers on the back of the declaration of independence. ware they had to squiz lemons on to it and take a blow dryer to it to read it..

Thats what im wanting to do can anyone help me with that plz?

best answer will be given!!! thats 10 extra points!

Answer 1

There are several ways you can do this, and there are a lot of books out there  from cub scouts to college level on secret writing and inks.

Here is a simple one you can use, and it does not use flame or heat.

You will need, white paper

ammonia (just a little bit will do, a couple tablespoon in a sprayer bottle)

water

paint brush or dip pen

Phenolphthalein solution or powder.(found int he kids chemistry sets, used to check pH by turning things pink)

Mix the Pheno. solution up, and use a pain brush or dip pen to write your message on the white paper- It will all dry to be white.

To see the writing, take the ammonia and a bit of water in the sprayer, and spritz the paper either from the top or the bottom. The writing will appear as pink . When it dries, everything goes white again, so if you do not get it in your first take, you can do it over!

Have fun

KAy

Answer 2

Use white vinegar. Once it dries, it'll be invisible. You can later see it by holding the paper near heat, like a light bulb or candle.