Infrared Spectroscopy & Microscopy
Infrared spectroscopy measures the amount and frequency (like color) of infrared light absorbed by a sample. The particular frequencies absorbed can be used to identify what the sample is.
 
Infrared light is invisible to the eye and lower frequency than red light. Very intense infrared light can be felt as heat on the skin. When absorbed by matter infrared light causes molecules to vibrate.
The Experiments
Transmission Spectroscopy
Microscopy
Globar
(light source)
liquid nitrogen
cooled detector
(77 K)
Sample
Data
0
4000
1000