Color and Mood. ENERGY STAR certified bulbs are available in a wide variety of shades of white light, ranging from yellowish, to white, to bluish white light, which allows you to customize the mood of your space.
The eye detects visible light, the nerves detect infrared or heat and the skin is sensitive to ultraviolet ( tanning and sunburn ) and the lens of the eye develops cataracts in response to UV also. a human body can detect ionizing electromagnetic radiation, if he can see what his geiger counter is reading.
One way humans use each of microwaves, X-rays, infrared, and radio waves. Microwaves- used to transmit cellular phone messages and cook food. X-rays- used to see inside the body to help doctors diagnose health problems. Infrared-provide the energy that makes your morning toast.