Mini Black Light & Invisible Marker
Write and read secret messages with this pen and black light combo.
Usually ships out the next day.
Recommend for 6 to 7 years with adult supervision.
Deal of the Day
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 short 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. Recommended for children ages 6 and up.
What's included?
- Mini Black Light
- Invisible Pen
- Activity Guide
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Worked better than expected!
Stacey - May 4, 2011
This kit is great. I plan to use it for a super power-themed event to demonstrate invisibility. The ink is truly invisible after it dries and shows up well under black light, even in a relatively well lit room. |
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Great Purchase!!!
Matthew Drayer - July 3, 2010
I have really enjoyed this product! I use it for glow in the dark cards and pictures as gifts. Love it! The picture below was made with this product. |
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