What is a IR Ray?
Infrared radiation (IR), sometimes referred to simply as infrared, is a region of the electromagnetic radiation spectrum where wavelengths range from about 700 nanometers (nm) to 1 millimeter (mm). Infrared waves are longer than those of visible light, but shorter than those of radio waves.
What is IR in electrotherapy?
Introduction. Infrared (IR) or thermal radiation is a band of energy in the complete electromagnetic spectrum. IR are the radiations of longer wavelength than the red end of the visible spectrum and extend to the microwave region, i.e., from 760 nm to 1 mm.
What are the applications of IR rays?
Infrared Radiation is often used in industrial, scientific, military, law enforcement, and medical applications. Night-vision devices are used extensively; active near-infrared illumination allows people or animals to be observed without detecting the observer.
What is IR ray range?
between 780 nm and 1 mm
Infrared radiation (IR), also known as thermal radiation, is that band in the electromagnetic radiation spectrum with wavelengths above red visible light between 780 nm and 1 mm.
Why is infrared called infrared?
Within the electromagnetic spectrum, infrared waves occur at frequencies above those of microwaves and just below those of red visible light, hence the name “infrared.” Waves of infrared radiation are longer than those of visible light, according to the California Institute of Technology (Caltech).
What are the types of infrared?
3 Types of Infrared heat
- Short Wave (Or Near Infrared, or IR-A). 0.78 to 1.5 microns: covers the thousands to high hundreds of degrees Centigrade.
- Medium Wave (Or Medium or Middle Infrared, or IR-B).
- Longwave Infrared (Or Far Infrared, or IR-C).
Why is infrared important?
SEEING THROUGH DUST Infrared waves have longer wavelengths than visible light and can pass through dense regions of gas and dust in space with less scattering and absorption. Thus, infrared energy can also reveal objects in the universe that cannot be seen in visible light using optical telescopes.
What are the features of infrared rays?
Characteristics of Infrared Radiation
- Infrared radiation consists of heat-inducing property.
- The origin is from an alteration in electron movement.
- Wavelength range from 710 nm to 1 mm.
- Frequency range from 430 THz to 300 GHz.
- Infrared radiation is a Transverse wave.
- Speed is 3X 108 m/s.
Why is infrared heat?
Infrared waves travel through the air and when they touch a surface, heat energy is released regardless of the surrounding air temperature. That heat energy excites the molecules in the object it meets which begin to vibrate and gain energy (and warm-up).
Can infrared light blind?
Prolonged exposure to IR radiation causes a gradual but irreversible opacity of the lens. Other forms of damage to the eye from IR exposure include scotoma, which is a loss of vision due to the damage to the retina.
Why is infrared lighting?
Infrared waves have longer wavelengths than visible light and can pass through dense regions of gas and dust in space with less scattering and absorption. Thus, infrared energy can also reveal objects in the universe that cannot be seen in visible light using optical telescopes.