FT IR Spectroscopy
What is the name given to the relaxation process due to an interaction between an excited nucleus and the magnetic fields caused by nuclei in molecules moving around in the sample?

None of these
Spin - spin - spin relaxation
Spin - lattice relaxation
Spin - spin relaxation

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FT IR Spectroscopy
In scanning electron microscopy

a specimen is fixed and then coated with thin layer of a heavy metal
None of these
a specimen is not fixed and then coated with thin layer of a heavy metal
a specimen is fixed and then coated with transition metal

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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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