An interesting thing to know about Japan’s HID lighting is that many metal halide and high pressure sodium lamps function as direct retrofit lamps for mercury vapor fixtures. In those case, there is no need to change the ballast to upgrade from mercury vapor to high pressure sodium or metal halide.
An interesting thing to know about Japan’s HID lighting is that many metal halide and high pressure sodium lamps function as direct retrofit lamps for mercury vapor fixtures. In those case, there is no need to change the ballast to upgrade from mercury vapor to high pressure sodium or metal halide.
Tokyo is weird. but where are the LED's
Don’t give in the wacky orientalism. We don’t need that Japan is as normal as any other country.