Uploaded August 2014 | Updated September 2026, 45 minutes ago
Here we have the 3 kinds of High Intensity Discharge bulbs firing up at once. As you can see, the dimmest one is the mercury vapor when every bulb has reach full brightness, and that's because the HPS beat up the Mercury Vapor bulb in the market like a year and a half ago, but that doesn't means that MV is a bad and inefficient light bulb. Actually, Mercury Vapor is more efficient than incandescent and maybe even halogen.
Here we have the 3 kinds of High Intensity Discharge bulbs firing up at once. As you can see, the dimmest one is the mercury vapor when every bulb has reach full brightness, and that's because the HPS beat up the Mercury Vapor bulb in the market like a year and a half ago, but that doesn't means that MV is a bad and inefficient light bulb. Actually, Mercury Vapor is more efficient than incandescent and maybe even halogen.
