User:Benjah-bmm27/degree/3/AJOE2

=Optical spectroscopy, AJOE=
 * Optical spectroscopy

Absorption spectroscopy

 * Absorption spectroscopy
 * Infrared spectroscopy, good for measuring [CO2] in air
 * Fourier transform infrared spectroscopy uses a Michelson interferometer and Fourier transformation (FT) of the data to obtain a spectrum
 * Resolution up to 0.5 cm&minus;1
 * IR source: metal, metal oxide or silicon carbide rod or wire, heated to >1200 K
 * Ultraviolet-visible spectroscopy
 * Modern UV-vis spectrometers measure the full spectrum simultaneously with a diode array detector (no moving parts, multiplexing advantage)
 * Wavelength range is typically 200–1100 nm
 * Resolution can be as good as 0.02 nm
 * Xe lamp is the UV-visible light source

Fluorescence spectroscopy

 * Fluorescence spectroscopy

Raman spectroscopy

 * Raman spectroscopy