Incandescent vs halogen skin#

Tanning lamps, UVB medical lamps, etc.

Range in color from cool-white with higher proportion of blue, through daylight to warm-white they emit a small amount of UV radiation.

Florescent & compact florescent вЂ“ energy efficient but contain mercury.

Incandescent bulbs are similar to daylight but are higher on the red end of the spectrum.

UVB вЂ“ short wave ultra violet it burns the superficial layers of the skin, and is part of vitamin D production process.

UVA вЂ“ long wave ultra violet it penetrates deep into the skin.

Visible light вЂ“ this includes blue light, which is poorly blocked by the eyeвЂ™s pigmentation.

Infrared вЂ“ beyond red, and although вЂњinvisible,вЂќ the retina can perceive it, as when it is pulsed rapidly in laser light pointers.

Incandescent vs halogen skin#

This is why UV light is so damaging to skin and eyes. The shorter the wave length of light, the greater the energy it contains. The light with the most energy is shorter wave ultraviolet (вЂlongвЂ™ wave UVA and short wave UVB). Next is the visible spectrum, from violet through blue and green and yellow to red. What effects do the different types of lightbulbs have on our eyes? On our health? Does the type of light in the evening affect our sleep cycles? WeвЂ™re encouraged to use compact fluorescent and LED bulbs instead of incandescent bulbs, but are the long-effects of these new bulbs known, or can their effects be predicted?ДЄt one end of the spectrum of light is low frequency infrared light, invisible to the naked eye, but visible to infrared camera devices. The miracle of electric lighting means more leisure and work time. We enjoy access to light 24 hours a day, even lighting the outside at night. Even though sunlight is free, we pay for electric lightbulbs.