transmission grating
Quick Summary
A transmission grating is an optical component with closely spaced, parallel lines on a transparent surface. These lines are used to separate light into its constituent wavelengths, creating a spectrum. This separation occurs due to the principle of diffraction and interference, where only waves of a specific wavelength are reinforced in a particular direction, while others are canceled out. Transmission gratings are made by ruling fine lines onto glass using precise machines or photographic methods. They offer high resolution, meaning they can distinguish very fine details in a spectrum, making them valuable tools in optical devices for analyzing light.12
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