1. Nature of Light
Light is an electromagnetic wave that can propagate in a vacuum as well as in other media. Light exhibits wave-particle duality, meaning it can be viewed both as a wave and as particles (photons). The speed of light in a vacuum is constant at approximately 299,792,458 meters per second, commonly referred to as the speed of light.
2. Classification of Light
Light can be classified based on its source, properties, and whether it can be perceived by the human eye.
Visible Light
Visible light refers to the light that can be directly perceived by the human eye, with wavelengths ranging from approximately 400 to 760 nanometers (nm). Based on wavelength, visible light can be divided into the following categories:
Red Light: Wavelength range 760–622 nm
Orange Light: Wavelength range 622–597 nm
Yellow Light: Wavelength range 597–577 nm
Green Light: Wavelength range 577–492 nm
Cyan Light: Wavelength range 492–450 nm
Blue Light: Wavelength range 450–435 nm
Violet Light: Wavelength range 435–390 nm
Invisible Light
Invisible light refers to light that cannot be directly perceived by the human eye and includes ultraviolet light, infrared light, X-rays, and gamma rays.
Ultraviolet Light: Wavelength range 10–400 nm, divided into UVA, UVB, and UVC regions. Ultraviolet light is mainly present in sunlight and is widely used in sterilization, fluorescence detection, and other fields.
Infrared Light: Wavelength range 780 nm to 1 mm, divided into near-infrared, mid-infrared, and far-infrared regions. Infrared light is widely used in thermal imaging, infrared photography, remote sensing, and security surveillance.
X-rays and Gamma Rays: These have even shorter wavelengths and very high penetrating power. They are important in medical imaging, material analysis, and security inspection.
3. Spectral Range
The spectral range refers to the continuous distribution of light of different wavelengths. Based on wavelength, the spectral range can be further divided into the following regions:
Ultraviolet Region: Wavelength range 10–380 nm, including the vacuum ultraviolet, far ultraviolet, and near ultraviolet regions.
Visible Light Region: Wavelength range 380–780 nm, the range of electromagnetic radiation perceptible to the human eye.
Infrared Region: Wavelength range 780 nm to 1 mm, including near-infrared, mid-infrared, and far-infrared regions.
Product Recommendations
On the path to precise spectral analysis, Jinsp leverages its excellent technical expertise and extensive industry experience to provide efficient, precise, and easy-to-use fiber optic spectrometers.
Jinsp SR50C General-Purpose Fiber Optic Spectrometer: This spectrometer can measure reflection, transmission, and absorption spectra in the 200–1100 nm range. By replacing gratings with different line densities, it can achieve high-resolution spectral detection in the ultraviolet, visible, and near-infrared bands.
Jinsp SR50R17: A compact, cost-effective near-infrared spectrometer for the 900–1700 nm range. It features gold-coated internal mirror surfaces for high near-infrared reflection efficiency and uses a non-cooled InGaAs sensor for high sensitivity and resolution.
Choosing our fiber optic spectrometers means you'll receive exceptional product performance, user-friendly operation, and comprehensive technical support. Let's work together to create a bright future for spectral analysis! Please visit: Fiber Optic Spectrometers - JINSP Company Limited (jinsptech.com)
Post time: Jun-14-2024