Mini Black Light and Invisible Pen Write and read secret messages with this pen and black light combo.
email to friend
print this page
Great for science experiments with using different lengths of light waves, or as an interesting addition to your next science fair project.
Ultraviolet wavelengths are very long with a very high frequency, and can be used to detect florescent material that would remain invisible under normal conditions. When you shine ultraviolet light on fluorescent material, it lights up with a beautiful bluish-green luminescence.
With the black light pen, you can write invisible messages that will only be revealed under a black light. You can use it to make black light posters or for a demonstration of ultraviolet rays in your next science class. Invisible marker ink can be removed with soap and water.
What's included?
- Mini Black Light
- Invisible Pen
- Activity Guide
Best Sellers
- Square Bubble Maker $5.95
- Baby Soda Bottles - Giant ... $8.95
- Potato Gun Launcher $16.95
- Insta Snow - Makes 2 Gallons $9.95
- Tornado Tube $2.50
- Six Test Tube Experiments in ... $15.95
- Baby Diaper Secret Science ... $9.95
- Pearl Swirl Ball $6.95














