What is frequency of IR radiation?

IR frequencies range from about 300 gigahertz (GHz) up to about 400 terahertz (THz), and wavelengths are estimated to range between 1,000 micrometers (µm) and 760 nanometers (2.9921 inches), although these values are not definitive, according to NASA.

What is IR radiation expressed as on a spectrum?

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 the range of infrared light?

Infrared radiation extends from the nominal red edge of the visible spectrum at 700 nanometers (nm) to 1 millimeter (mm). This range of wavelengths corresponds to a frequency range of approximately 430 THz down to 300 GHz. Beyond infrared is the microwave portion of the electromagnetic spectrum.

What nm is far-infrared?

The third region, far-infrared, is closest to microwaves on the electromagnetic spectrum. This region has a wavelength range of 3,000 nm to 1 nm, or 3 to 1,000 microns and a frequency range of 0.3 THz to 20 THz.

What is the infrared spectrum?

Infrared spectroscopy (IR spectroscopy) is the spectroscopy that deals with the infrared region of the electromagnetic spectrum, that is light with a longer wavelength and lower frequency than visible light. As with all spectroscopic techniques, it can be used to identify and study chemicals.

Is infrared the same as thermal?

The thermal radiation and the infrared radiation are the same thing if the sources of the radiation have temperatures comparable to the room temperature. For ordinary cold and lukewarm objects, the thermal radiation is mostly emitted in the infrared.

Why is infrared hot?

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 being to vibrate and gain energy (and warm up).

What is an infrared spectrum?

Infrared spectroscopy (IR spectroscopy) is the spectroscopy that deals with the infrared region of the electromagnetic spectrum, that is light with a longer wavelength and lower frequency than visible light. As with all spectroscopic techniques, it can be used to identify and study chemicals. …

How many types of IR are there?

three
The infrared portion of the electromagnetic spectrum is usually divided into three regions; the near-, mid- and far- infrared, named for their relation to the visible spectrum. The higher energy near-IR, approximately 14000-4000 cm-1 (0.8-2.5 μm wavelength) can excite overtone or harmonic vibrations.

What is difference between near and far infrared?

“Near infrared” light is closest in wavelength to visible light and “far infrared” is closer to the microwave region of the electromagnetic spectrum. The longer, far infrared wavelengths are about the size of a pin head and the shorter, near infrared ones are the size of cells, or are microscopic.

What is infrared radiation used for?

Infrared (IR) light is used by electrical heaters, cookers for cooking food, short-range communications like remote controls, optical fibres, security systems and thermal imaging cameras which detect people in the dark.

What absorbs IR radiation?

Gold, manganese and copper also absorb IR radiation well. According to Next Energy News, the U.S. Department of Energy is using these three metals to design nanoantennas, which will convert waste heat in the form of IR radiation into electricity.

What is UV and IR radiation?

Ultraviolet Blood Irradiation Benefits Heightens the body’s immune response Powerful anti-inflammatory and anti-infection effects Improves circulation Oxygenation of tissues Balancing effect (homeostasis) Reduction of tissue pain Increased immune and pain tolerance to radiation or chemotherapy Cardiovascular protection through increased metabolism of cholesterol, uric acid, and glucose

How is infrared radiation used in everyday life?

Many of the most common uses of infrared radiation are in the area of electronics, as infrared light can be used to transmit signals and data over small spaces. Remote controls, for instance, commonly use infrared light to transmit signals for controlling devices such as televisions and other household electronics.

What are the dangers of infrared radiation?

Prolonged exposure to high levels of infrared radiation might lead to burns and cause eye problems, including cornea and retina damage, cataracts and injuries to the eye lens.