INVISIBLE INK
(Courtesy of the National Museum of the United States Army)
The Army has a long history of sending messages using codes to keep them secret. From the Revolutionary War to today, soldiers have used many different types of codes to write their messages.
Directions: Follow the steps below to create your own invisible messages.
Materials needed:
- ¼ Cup of baking soda
- ¼ Cup of water
- ¼ Cup of dark juice (i.e., grape or cranberry)
- Paper
- Cotton swab
- Toothpick or paintbrush to write with
- Mix together baking soda and water.
- Dip your writing utensil into the water/baking soda mixture.
- Grab a sheet of paper and write your message. Make sure you allow time for it to dry.
- Once dry, apply your decoding stain. Do this by dipping your cotton swab into dark juice and paint over your message.
- See if you can read your now visible message.
Visit: theNMUSA.org