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What is Signal to Noise Ratio?

The signal to noise ratio, often abbreviated S/N, is exactly what it sounds like; it’s the ratio of the magnitude of the signal to the magnitude of the noise. Experiments need a large S/N to be able to distinguish features in the signal from the noise. If the S/N is...

What is a Spectrograph?

What is a Spectrograph? A spectrograph is an optical device that separates light into its individual wavelengths, allowing the spectral content of a light source or sample to be analyzed. It is a key component of a spectrometer and is responsible for dispersing...
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