Science Album part 2

Infrared light:700-400 billions of a meter, is a electomagnetic radiation with a wavelenght. IR are longer than radiation microwaves. IR  is used extensively for military and civilin purposes. Humans at normal body temperature radiate chiefly at wavelenght as, shown by Wien' s displacement law. The name means below red "below". Red is the color of the wavelenghts visible light.

Ultraviolet light:Is a electromagnetic radiation with a wavelenght shorter than  that of a visible light but longer than x rays. UV light is found in sunlight and is imitted electric areas and specialized light such as black light. Beneficial effects:

Vitamin D UV exprosure includes the production of the vitamin D in the skin other beneficial effects are aeslheticts, medical applications, harmful effects, medical organization recomended that patients protect themselves from UV radiation using sunscreen. Also can damage the eyes. IV light is used for quantification of nucleic acids.