Truman State University Physics Department - This hydrogen discharge lamp is celebrating #PurpleFriday, how about you? (Disregard red and cyan wavelengths trying to steal the show.) | Facebook
![HYDROGEN LAMP・MERCURY LAMP・HELIUM LAMP・etc /Optical Instruments and Components/Products/Temperature Sensors, Instrumetns and components/Tashika-Japan HYDROGEN LAMP・MERCURY LAMP・HELIUM LAMP・etc /Optical Instruments and Components/Products/Temperature Sensors, Instrumetns and components/Tashika-Japan](https://www.tashika.co.jp/products/optical/img/hydrogen_mercury_helium_lamp.jpg)
HYDROGEN LAMP・MERCURY LAMP・HELIUM LAMP・etc /Optical Instruments and Components/Products/Temperature Sensors, Instrumetns and components/Tashika-Japan
![Using D300 to photograph a visual Hydrogen spectrum - The Digital Darkroom: Process, Technique & Printing - Photo.net Using D300 to photograph a visual Hydrogen spectrum - The Digital Darkroom: Process, Technique & Printing - Photo.net](https://content.invisioncic.com/l323473/monthly_2008_08/00QZc7-65793584.jpg.0d1d59ae7225bc30b20c7ed2ed908e01.jpg)
Using D300 to photograph a visual Hydrogen spectrum - The Digital Darkroom: Process, Technique & Printing - Photo.net
![Tagging drugs with heavy hydrogen made as easy as flicking a light switch | Research | Chemistry World Tagging drugs with heavy hydrogen made as easy as flicking a light switch | Research | Chemistry World](https://d2cbg94ubxgsnp.cloudfront.net/Pictures/2000xAny/0/8/3/134083_CW091117_Tritiating-and-deuterating-drugs-with-ease-Index.jpg)
Tagging drugs with heavy hydrogen made as easy as flicking a light switch | Research | Chemistry World
Is it possible to use hydrogen (H2) gas in an arc lamp, instead of the usual mercury (Hg) gas? - Quora
![Emission Spectra Gas Lamp (Hydrogen) | Central Coast Science Project | Science Kits for Teaching Library Emission Spectra Gas Lamp (Hydrogen) | Central Coast Science Project | Science Kits for Teaching Library](https://ccsplibrary.com/wp-content/uploads/2013/09/emission-spectra-gas-lamp.jpg)