FT IR Spectroscopy
The frequency of precession, the transition frequency and the Larmor frequency are

different terms for the same frequency
same terms for the same frequency
same terms for the different frequency
different terms for the different frequency

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

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

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FT IR Spectroscopy
In scanning electron microscopy

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

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