Confirmation of Crystal Wave-Length Measurements and Determination ofhe43

1934 ◽  
Vol 45 (7) ◽  
pp. 454-460 ◽  
Author(s):  
Paul Kirkpatrick ◽  
P. A. Ross
Keyword(s):  
Wave Length ◽  
Length Measurements

scholarly journals Krypton vacuum wave-length measurements

1946 ◽  
Vol 187 (1009) ◽  
pp. 220-228 ◽  
Keyword(s):  
Wave Length ◽  
Length Measurements ◽  
Significant Figures

The vacuum wave-lengths of thirty-one lines in the arc spectrum of krypton have been compared directly with the red cadmium standard using a reflecting echelon in vacuum. Uncertainties connected with the dispersion of normal air and the specification of the laboratory air used have thereby been eliminated. Estimates of uncertainty suggest that there is justification in expressing the values to eight significant figures.

Argon vacuum wave-length measurements

1953 ◽  
Vol 218 (1135) ◽  
pp. 577-586 ◽  
Keyword(s):  
Standard Error ◽  
Wave Length ◽  
Systematic Difference ◽  
Length Measurements ◽  
Significant Figures

The vacuum wave-lengths of 84 lines of the argon spectrum in the region 3500 to 4500 Å have been measured using two reflecting echelons. Since the standard error of the most favourable lines is only ± 0·0001 Å and less than ± 0·0002 Å for 53 of the lines, there is some justification in expressing the wave-lengths to eight significant figures. As no systematic difference between wave-lengths determined with each echelon has been found, the method is independent of the particular instrument employed. A discussion of the non-linearity of dispersion is given, and it is shown that it may be assumed linear for the particular echelons used without introducing appreciable error.

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