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Are mercury vapor lamps actually widely used now, or for the past decades? I thought the most common lighting type before LEDs were sodium lamps which are most
by pilsetnieks 8y ago
Are mercury vapor lamps actually widely used now, or for the past decades? I thought the most common lighting type before LEDs were sodium lamps which are most definitely not blue.
- Aloha 8y agoMercury Vapor was widely used from the early 50's to the mid-70's/early 80's