Tested bulbs are about six month old – considered expired. Spectrometer pics will be added ASAP.
Article Title: The in situ light microenvironment of corals Authors: Daniel Wangpraseurt, Lubos Polerecky, Anthony W.D. Larkum, Peter J. Ralph, Daniel A. Nielsen, Mathieu Pernice, Michael Kühl Journal: Limnology and Oceanography, Volume 59, Issue 3, May 2014, Pages 917–926 DOI: 10.4319/lo.2014.59.3.0917 PDF Link. I don't understand the choice of words "Scalar irradiance", but the meaning in... Continue Reading →
This is my Project STAR spectrometer. It was very inexpensive. I use it for examining the color of different lights inside and outside. (Don't look directly at the sun through this device – or anything else!) It works by taking in light via the small opening at the upper-right. The light bounces off the diffraction... Continue Reading →