Light is measured in wavelengths
Although not visible, infrared light is vital to most living organisms on planet Earth. People experience infrared light when being warmed by the sun and using a remote control.
The Electromagnetic Spectrum
Infrared light can be understood in the context of the electromagnetic spectrum. This spectrum measures the wavelengths of light. The visible portion of this spectrum consists of all of the different colors of light that are visible to the naked eye.
Infrared
The National Aeronautics and Space Administration (NASA) says that infrared light is located between the visible light and microwave lengths on the electromagnetic spectrum. It can be classified into three subcategories; the far infrared, the mid-infrared, and the near infrared.
Far Infrared
Far infrared light is also called terahertz radiation. This has the longest wavelength of the three subcategories. It measures about the size of a pin head.
Mid-Infrared
Mid-infrared is obviously the middle wavelength of the three subcategories. It can be used scientifically to map the vibration levels of most molecules.
Near Infrared
Near infrared has the shortest wavelength within the categories of infrared light. Near infrared wavelengths are microscopic.
Tags: infrared light, three subcategories, electromagnetic spectrum, infrared light, Near infrared, wavelength three, wavelength three subcategories
