What light bulbs do not cause UV radiation?
Most bulbs fall within accepted safe limits.The bulbs emit very small amounts of UV radiation.A high-energy, invisible form of light that can cause sunburn, skin cancers and other problems can be caused by Compact Fluorescent Lamps.The phosphor coating on the coiled bulb can crack, allowing small amounts of UV light to pass through.
Ultra violet light is produced by an electric current in a low-pressure mercury vapor.White light is emitted by the phosphor coating on the inside of the bulb.The phosphor coating on fluorescent lamps blocks most of the UV light.Ultra violet light is produced by the long fluorescent tubes used in home and office lighting.There is no problem with long fluorescent tubes.
The white light produced by the traditional bulb is caused by an electric current.The ultraviolet part of the light from these bulbs is very small.Most light bulbs are designed to minimize the amount of UV they produce.
The color of the light depends on the material in the lamp.LEDs are called monochromatic because they produce a light that only consists of a single color.The blue light is converted into white light with the use of phosphors.There is almost no UV in the blue light.
Many street lights use a technology called a sodium-vapor technology.The yellow light produced by the sodium-vapor bulb is very bright.The yellow part of the spectrum contains virtually no ultraviolet, and the light from sodium vapor is concentrated in that part.