FT IR Spectroscopy
When radiation energy is absorbed by a spin 1/2 nucleus in a magnetic field, what happens?

The nucleus spins faster
The processional frequency of the nucleus increases
The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field
None of these

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FT IR Spectroscopy
What does the Michelson interferometer do?

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

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