Non-visible light refers to electromagnetic radiation that lies outside the range of human vision, which is approximately 400 to 700 nanometers in wavelength. Examples of non-visible light include:
-
Ultraviolet (UV) Light: Wavelengths shorter than visible light (10 nm to 400 nm). UV light is emitted by the sun and can cause sunburn.
-
X-rays: Wavelengths ranging from about 0.01 nm to 10 nm. X-rays are commonly used in medical imaging.
-
Gamma Rays: Wavelengths shorter than 0.01 nm. Gamma rays are produced by radioactive substances and certain astronomical events, and they have very high energy.
-
Infrared (IR) Light: Wavelengths longer than visible light (700 nm to 1 mm). Infrared is used in remote controls, thermal imaging, and night-vision technology.
-
Microwaves: Wavelengths between about 1 mm and 30 cm. Microwaves are used in microwave ovens and certain communication technologies.
-
Radio Waves: Wavelengths longer than microwaves (from about 30 cm up to several kilometers). Radio waves are used for broadcasting audio and television signals, as well as in various forms of communication.
These regions of the electromagnetic spectrum are important in various applications, including medical imaging, communication, heating, and scientific research.
1 answer