Visible Spectrum Infrared And Ultraviolet Light

In space infrared light helps us map the dust between stars.

Visible spectrum infrared and ultraviolet light.

Non ionizing radiation is found in a wide range of occupational settings and can pose a considerable health risk. The only direct signature of the nuclear process is the emission of neutrinos. Lasers commonly operate in the uv visible and ir frequencies. Light also referred to in professional literature as radiation is best thought of as a spectrum consisting of ultraviolet light uv at the short end visible light in the center and infrared ir wavelengths at the long end.

This is similar to how a dog can hear the sound of a whistle just outside the hearing range of humans. Essentially that equates to the colors the human eye can see. Ultraviolet radiation is emitted by the sun and are the reason skin tans and burns. Hot objects in space emit uv radiation as well.

It is also known as the optical spectrum of light or the spectrum of white light. The visible light spectrum is the section of the electromagnetic radiation spectrum that is visible to the human eye. White light is a combination of lights of different wavelengths in the visible spectrum. It ranges in wavelength from approximately 400 nanometers 4 x 10 7 m which is violet to 700 nm 7 x 10 7 m which is red.

Ultraviolet light has shorter wavelengths than visible light with lengths of 10 to 400 nanometers. Although uv waves are invisible to the human eye some insects such as bumblebees can see them. You can test yourself using a prism and a sheet of paper. Other wavelengths especially near infrared longer than 760 nm and ultraviolet shorter than 380 nm are also sometimes referred to as light especially when the visibility to humans is not relevant.

Non ionizing radiation includes the spectrum of ultraviolet uv visible light infrared ir microwave mw radio frequency rf and extremely low frequency elf. Night vision goggles pick up the infrared light emitted by our skin and objects with heat. The sun is the best known source of ultraviolet rays. While invisible to humans as with infrared light we can see the effects.

Ultraviolet uv light has shorter wavelengths than visible light. Our eyes detect visible light. Also seeing well into one end of the spectrum doesn t necessarily mean you can see well into the other end of the spectrum. Fireflies light bulbs and stars all emit visible light.

The sun also emits x rays ultraviolet visible light infrared and even radio waves.