Tube: EM-11 (6U5G) Magic Eye tube (tunning tube)
EM-11 is a magic eye tube, used in old radios for tunning. See some schematics on how to use this tube, for some green, fluorescent effects!
Posted inHardware High Voltage Optics
Ultraviolet Light
Powering UV light tubes. A short comparison between UVA and UVC.
Glass and… Uranium?!
UV fluorescence of uranium doped glass marbles.