Robert J. Berger@ja2ke That was fascinating. I had no idea about the Mary Poppins technique. I wonder if you can make single frequency LEDs instead of Sodium lamps? Seems like that should be easy. I thought that they effectively are and they use phosphors or quantum dots to make them broader spectrum.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.