Question: Instruments for emission spectroscopy are of three basic types: Sequential: programmed to move from the line for one element to that of a second, pausing
Instruments for emission spectroscopy are of three basic types: Sequential: programmed to move from the line for one element to that of a second, pausing long enough (a few seconds) at each to measure line intensities with a satisfactory signal-tonoise ratio. Simultaneous multichannel: measure simultaneously, or nearly so, the intensities of emission lines for a number of elements (sometimes as many as fifty or sixty). Fourier transform
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