FT IR Spectroscopy
Why is it advantageous to record many FID signals from the same sample and then add them together?

To increase sensitivity
None of these
To remove inaccuracies caused by fluctuations in the applied magnetic field
To ensure that all target nuclei in the sample have been excited

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FT IR Spectroscopy
What does the Michelson interferometer do?

Selectively filter certain wavelengths from a beam of I.R. radiation
Modulate the I.R. signal at a lower frequency, so that it can be observed by a detector
None of these
Split a polychromatic beam of radiation into its component wavelengths

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