Chapter 20: Q2 TY (page 509)
Visible light strikes the surface of benzene at a angle. At what angle does the light ray pass through the benzene?
Short Answer
The angle of light ray passed through the benzene is .
Chapter 20: Q2 TY (page 509)
Visible light strikes the surface of benzene at a angle. At what angle does the light ray pass through the benzene?
The angle of light ray passed through the benzene is .
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Get started for freeExplain how the following detectors of visible radiation work: (a) photomultiplier tube, (b) photodiode array, (c) charge coupled device, and (d) image intensified charge coupled device.
The interferometer mirror of a Fourier transform infrared spectrophotometer travels pm1 cm .
(a) How many centimeters is the maximum retardation, ?
(b) State what is meant by resolution.
(c) What is the approximate resolution of the instrument?
(d) At what retardation interval, , must the interferogram be sampled (converted into digital form) to cover a spectral range of 0 to 2000 cm-1 ?
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(a) Use the rules for propagation of uncertainty to show that, if you add two such signals, the result is total signal , giving a signal-to-noise ratio of .
(b) Show that if you add four such measurements, the signal-tonoise ratio increases to 200 / 1.
(c) Show that averaging n measurements increases the signal-to-noise ratio by a factor of compared with the value for one measurement.
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