What is Ultraviolet Light (UV)?


People new to the hobby of fluorescent minerals typically have a lot of questions about UV.  What is the difference between shortwave (SW), midwave (MW), and longwave (LW)?  Is UV light harmful?  What kind of bulbs/tubes/LEDs are needed to generate UV?  I came across a couple of videos that are pretty basic and answer these questions quite clearly.


First a quick explanation of the light spectrum and why 365nm is important to us as fluorescent mineral collectors (as well as filters).  Of course this video is trying to sell something - a 365nm LED light for >$1,000 (hint - don't buy it unless you've got really deep pockets).  But it's a good explanation of UVA (longwave) and visible light.


Secondly an explanation of the various types of UV tubes/bulbs available (and a little about the dangers):


Third - a few experiments with Ultraviolet Light and Fluorescence. Also explained are the three colors of UV and phosphorescence.






Please reload

Recent GlowNotes Posts

Please reload

Visit the GlowNotes Blog to view more - educational posts, equipment, minerals, photography and displays

Related Posts:

Please reload

Email comments or suggestions:


RSS Feed
  • reddit
  • Facebook Social Icon

Subscribe to our RSS (Real Simple Syndication) feed to get new posts delivered directly to your desktop!

Nature’s Rainbows is a non-commercial web site maintained entirely by volunteer hobbyists and contributors.  Our mission is to provide information about UV and luminescence, premium fluorescent mineral photos, and a fluorescent mineral database for the enjoyment of FL mineral collectors around the world.  Information on this web site is covered under a Creative Commons License.

Feel free to contact us with comments and suggestions.

Like us on Facebook!