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The variation of focal length with wave-length is given. The monochromator objectives (collimator and telescope) have focal lengths of 150 mm at 5893A and 126 mm at 2000A.
Based upon Bausch and Lomb data (reference 6) at selected wave-lengths, given in angular dispersions. Dispersion in angstroms per mm obtained from angular dispersions (radians per cm of wave-length) by multiplying by the focal length of the objective at the particular wave-length (values in column 2) and dividing by 108, and then taking the reciprocal.
A=angstrom unit.
Slit widths employed in the reported measurements. At these slit widths good galvanometer deflections of approximately similar magnitude were obtained for the blank (i.e., 80 to 100 on the transmission scale).
Table II
ϵ values on K2CrO4 in 0.05N KOH*, and comparison of transmission measurements on a test glass (Wratten filter 18A).
Read against blank of 0.05N KOH.
The subscripts to ϵ are the wave-length locations (in mμ) of maxima.
The subscript to ϵ is the wave-length location of minimum. For notation see footnote 12.
Mean, with standard error
, of successive determinations on the same sample over a period of two hours.
Mean, with standard error, for the four samples of K2CrO4, including mean of sample 1. T, the transmission=I/I0. The subscripts are wave-lengths in mμ, with maximum of transmission at 360 mμ.
National Bureau of Standards Test No. 96032.
Mean, with standard error, exclusive of Bureau of Standards test.
The variation of focal length with wave-length is given. The monochromator objectives (collimator and telescope) have focal lengths of 150 mm at 5893A and 126 mm at 2000A.
Based upon Bausch and Lomb data (reference 6) at selected wave-lengths, given in angular dispersions. Dispersion in angstroms per mm obtained from angular dispersions (radians per cm of wave-length) by multiplying by the focal length of the objective at the particular wave-length (values in column 2) and dividing by 108, and then taking the reciprocal.
A=angstrom unit.
Slit widths employed in the reported measurements. At these slit widths good galvanometer deflections of approximately similar magnitude were obtained for the blank (i.e., 80 to 100 on the transmission scale).
Table II
ϵ values on K2CrO4 in 0.05N KOH*, and comparison of transmission measurements on a test glass (Wratten filter 18A).
Read against blank of 0.05N KOH.
The subscripts to ϵ are the wave-length locations (in mμ) of maxima.
The subscript to ϵ is the wave-length location of minimum. For notation see footnote 12.
Mean, with standard error
, of successive determinations on the same sample over a period of two hours.
Mean, with standard error, for the four samples of K2CrO4, including mean of sample 1. T, the transmission=I/I0. The subscripts are wave-lengths in mμ, with maximum of transmission at 360 mμ.
National Bureau of Standards Test No. 96032.
Mean, with standard error, exclusive of Bureau of Standards test.