Characteristics of infrared waves
What are 3 characteristics of infrared waves?
Characteristics of Infrared Radiation
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.
What are the properties and uses of infrared?
Infrared light is used in industrial, scientific, and medical applications. Night-vision devices using infrared illumination allow people or animals to be observed without the observer being detected. In astronomy, imaging at infrared wavelengths allows observation of objects obscured by interstellar dust.
What are uses of infrared waves?
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 is the description of infrared waves?
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.
Why are infrared waves called heat waves?
(a) Infra-red waves are also known as heat waves because they raise the temperature of the object on which they fall. They also affect the photographic plate and are readily absorbed by most materials. (b) Electromagnetic waves transport momentum.
What is the frequency of infrared waves?
300 GHz to 400 THz
Infrared (IR) has wavelengths λ between 780 nm and 1 mm, which corresponds to a frequency range from 300 GHz to 400 THz. In the second half of the 19th century, it became known that heat radiation and other electromagnetic waves, such as visible light or radio waves, were similar in nature.
What is the wavelength of infrared waves?
Wavelength range and sources
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. IR is categorized as IR-A (780 nm-1.4 µm), IR-B (1.4-3 µm) and IR-C, also known as far-IR (3 µm-1 mm).
Does infrared have the longest wavelength?
Although we know that radio waves and microwaves have longer wavelengths, they are not included anywhere in this row. So, it is correct to say that of these types, infrared has the longest wavelength.
How are infrared waves produced state their properties and uses?
Infrared waves are produced by hot bodies and molecules. They are referred as heat waves because they are readily absorbed by water molecules in most materials, which increase their thermal motion, so they heat up the material. Infrared waves are used for therapeutic purpose and long distance photography.
What are the properties of visible light?
The color components of visible light include violet, blue, green, yellow to orange, bright red and dark red. The full range of visible light wavelength stretches from about 340 nanometers to around 750 nanometers. Light in the range of 340 to 400 nanometers is near ultraviolet (UV), mostly invisible to human eyes.
What is the frequency of infrared waves?
300 GHz to 400 THz
Infrared (IR) has wavelengths λ between 780 nm and 1 mm, which corresponds to a frequency range from 300 GHz to 400 THz. In the second half of the 19th century, it became known that heat radiation and other electromagnetic waves, such as visible light or radio waves, were similar in nature.
What is the wavelength of infrared waves?
Wavelength range and sources
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. IR is categorized as IR-A (780 nm-1.4 µm), IR-B (1.4-3 µm) and IR-C, also known as far-IR (3 µm-1 mm).
What are infrared waves produced by?
Infrared waves are produced by hot bodies and molecules. They are referred as heat waves because they are readily absorbed by water molecules in most materials which increases their thermal motion so they heat up the material. Use: For therapeutic purpose and long distance photography.
What is the energy of a infrared wave?
Definition and relationship to the electromagnetic spectrum
| Name | Wavelength | Photon energy (eV) |
|---|---|---|
| Ultraviolet | 10 nm – 400 nm | 124 eV – 3.3 eV |
| Visible | 400 nm – 700 nm | 3.3 eV – 1.7 eV |
| Infrared | 700 nm – 1 mm | 1.7 eV – 1.24 meV |
| Microwave | 1 mm – 1 meter | 1.24 meV – 1.24 μeV |
How fast do infrared waves travel?
Approximately 186,000 miles (300,000 kilometers) per second. Infrared Light: The form of light just “below” (or to the left of) the red end of the visible light spectrum.