Ultraviolet radiation, X-rays and gamma rays all have wavelengths that are shorter than visible light. The ultraviolet spectrum ranges from 400 to 10 billionths of a meter, X-rays from about 10 billionths to 10 trilliont... More » Science Physics Optics & Waves

Infrared light includes a range of wavelengths, spanning from one millimeter down to 750 nanometers. The top end of wavelengths include those used for communication, and the lower ranges are those used for visible light. More » Science Physics Optics & Waves

The wavelength of ultraviolet light is 400 nanometers or less. Visible light and color range from 400 nanometers to 750 nanometers. The region just below the visible wavelength is called near ultraviolet. More » Science Physics Optics & Waves
similar articles

Electromagnetic radiation between 8*10^14 to 3*10^16 Hz (800 THz to 30 PHz) and wavelengths from 10^-8 m to 3.8*10^-7 m (10 nm to 380 nm) are ultraviolet rays. The frequency of waves is inversely proportional to their wa... More » Science Physics Optics & Waves

Blue-violet light on the visible light spectrum can cause damage to retina cells, increasing one's risk of developing age-related macular degeneration, explains Essilor. Macular degeneration is an eye condition in which ... More » Science Physics Optics & Waves

Ultraviolet radiation is divided into three categories: UVA, UVB and UVC, only one of which is blocked by conventional window glass. UVA has the longest wavelength, followed by UVB and UVC. More » Science Physics Optics & Waves

Gamma rays are used in many different ways; one of the most common uses is inspecting castings and welds for defects that are not visible to the naked eye. Another common use of gamma rays is in the treatment of certain ... More » Science Physics Optics & Waves