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.
- Mini Black Light
- Invisible Pen
- Activity Guide
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.
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.