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Unformatted text preview: er noise is caused by variations in experimental variables that control the
source intensity, such as power supply voltages and temperature. It can also be
caused by mechanical variations such as vibrations. (e) Cell positioning uncertainty is caused by our inability to position the cell in the same
exact place each time. A random variation is introduced because the incident beam
is imaged onto slightly different portions of the cell walls each time causing
differences in the reflection, transmission and scattering characteristics of the cell. (f) A beamsplitter is a device that causes an incident beam to divide into two beams at
its output. It can be made from mirrors, rotating choppers, or optical materials that
cause a beam to be split into two beams....
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This document was uploaded on 03/06/2014 for the course CHEM 422 at CSU Northridge.
- Fall '08