A Secret Letter
with Invisible Ink |
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Introduction:
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Developing recipes for invisible ink is the task of
scientists. Putting it to use is generally the work of spies
and others in pursuit of nefarious deeds. It's the work of
the sleuth to figure it all out, at least that's the way
most good mystery novels work! But invisible ink has also
had its place in history.
Artifacts from World
War II turn up quite frequently, but a certain postcard
turned up a few years ago which caught everyone's interest.
The postcard had been sent out of Poland during the
occupation. There wasn't anything of interest to the Germans
on the postcard, or so they thought.
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Invisible ink had made this
possible to send and receive secret messages for many years, but
what is invisible ink? And how does it work? |
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Material and step by step instructions:
In this project you will research to find a simple formula
for invisible ink. You will also use different methods for making and
revealing invisible messages. Invisible ink is a fun start to get
familiar with chemistry and chemical changes. |
Details of
this project:
More details or support on this project is available for the members of itisfast.com. Since research on this subject has a long history, you might
also be able to find good books about it in your local library or find
some information on the internet. MiniScience.com also has a kit for
invisible ink. |
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