How many Hertz is infrared radiation?
How many Hertz is infrared radiation?
Definition and relationship to the electromagnetic spectrum
| Name | Wavelength | Frequency (Hz) |
|---|---|---|
| Ultraviolet | 10 nm – 400 nm | 750 THz – 30 PHz |
| Visible | 400 nm – 700 nm | 430 THz – 750 THz |
| Infrared | 700 nm – 1 mm | 300 GHz – 430 THz |
| Microwave | 1 mm – 1 meter | 300 MHz – 300 GHz |
Is infrared low frequency?
IR is a type of electromagnetic radiation, a continuum of frequencies produced when atoms absorb and then release energy. From highest to lowest frequency, electromagnetic radiation includes gamma-rays, X-rays, ultraviolet radiation, visible light, infrared radiation, microwaves and radio waves.
What is the wavelength of infrared radiations?
700-1000 nm
The infrared range covers 700-1000 nm (wavelength), or 14,286-12,800 cm-1 (wavenumber), and ultraviolet radiation has wavenumbers above these, approximately, 25,000 – 50,000 cm-1, or 100 to 400 nm (wavelength).
Do infrared waves have a high or low frequency?
Infrared radiation has longer waves than red light, and thus oscillates at a lower frequency and carries less energy. Ultraviolet radiation has shorter waves than blue or violet light, and thus oscillates more rapidly and carries more energy per photon than visible light does.
What is the example of infrared?
For example, hot charcoal may not give off light but it does emit infrared radiation which we feel as heat. The warmer the object, the more infrared radiation it emits. Humans, at normal body temperature, radiate most strongly in the infrared at a wavelength of about 10 microns.
How is infrared used in daily life?
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.
Is infrared radiation harmful?
Exposure to intense electromagnetic radiation, including infrared radiation, can damage the lens and cornea of the eye. This is one reason why staring at the sun is harmful (and unintelligent). People who work near intense radiation must wear goggles.
What is the frequency range of infrared light?
Definition and relationship to the electromagnetic spectrum. 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.
What is the wavelength of infrared radiation?
infrared radiation (IR) Share this item with your network: 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).
What is infrared radiation (IR)?
Infrared radiation (IR), or infrared light, is a type of radiant energy that’s invisible to human eyes but that we can feel as heat. All objects in the universe emit some level of IR radiation , but two of the most obvious sources are the sun and fire. IR is a type of electromagnetic radiation,…