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.
This is a daft question. Our eyes can detect visible radiation, our skin can detect infra-red, our skin can also react to ultra-violet radiation by tanning, and producing skin cancers. Our brains can react directly to the impact of gamma rays ( as seen by astronauts ) and some microwaves will cause us to heat up internally.