Lighting Controls - Automatically Cycle Longwave, Shortwave, Midwave, and White light in your Display
Over the years I've had requests for lighting controllers that would allow us to remotely control our different wavelength lights.
This needs to be said. Over the years a few disreputable sellers have been marketing a little 4/6 watt shortwave light for fluorescent minerals.
I cancelled my plans to take the grandchildren to the fall Franklin Mineral Show. As a Plan B, I decided to go to the Midwest Chapter of the Fluorescent Mineral Society (FMS) meeting and fieldtrips near Cave-in Rock, IL
It was officially spring and time to get out to collect fluorescent minerals.
Many minerals exhibit an “afterglow” when the UV light is turned off. This glow can last for milliseconds or hours depending on the mineral.
Recently I posted a question about Afghan sodalite (hackmanite) after reviewing the MinRec article about Sar-E-Sang. Someone reminded me that there was a large discussion on this topic last year. I dug out that discussion and copied it here to the blog. This is one reason we created Nature's Rainbows - to capture these excellent discussions.
Tenebrescence of Greenland sodalite is amazing. This is a piece of a deeply tenebrescent sodalite.
Tenebrescence is when minerals change color when exposed to sunlight, also known as reversible photochromism.