Invisible Ink

Invisible Ink (8)

A few weeks back, Travis and I had fun exploring different ways to hide messages, including revealing lemon juice with a hot iron and exposing white crayon with paint. Today we found an even cooler method; did you know you can reveal a secret message with a flower?

Invisible Ink (4)

First, we wrote messages in two kinds of “ink.” The first was plain lemon juice, and the second was baking soda mixed with a bit of water.

Invisible Ink (1)

Travis made scribbles, but to help illustrate the results better for him, I wrote his name on one piece of paper and a secret map on the other.

Invisible Ink (2)

Be sure to use slightly thick paper, such as construction paper or watercolor paper, or it might tear during the reveal. Let dry.

Once dry, we rubbed over the paper with a red rose. Travis loved the forensic feel to the project!

Invisible Ink (10)

This worked significantly better with the baking soda than with the lemon juice, and we also found that the results are much clearer on on large letters or drawings than small ones.

Invisible Ink (9)

Perhaps the most interesting takeaway was that the baking soda was revealed in blue, and the lemon juice comes out red.

Invisible Ink (7)

In sum, a fun little project for any budding detectives, with results that are both pretty and scientific.

Invisible Ink (6)

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s