Abstract
THE green emission line 5461 A. of mercury-198 has been proposed by Meggers1 as a primary standard of wave-length, and is one of the lines being considered as the basis for a redefined international metre. The line has much to recommend it in its sharpness, isolation from other lines, convenience of excitation, etc.
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References
Meggers, W. F., and Kessler, K. G., J. Opt. Soc. Amer., 40, 737 (1950).
Pringsheim, “Fluorescence and Phosphorescence” (Interscience Publishers, Ltd., London, 1949).
Baird, K. M., and Smith, D. S., Canad., J. Phys., 35, 455 (1957).
Margenau, H., and Watson, W. W., Rev. Mod. Phys., 8, 44 (1936).
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BAIRD, K., SMITH, D. Prevention of Reversal in Mercury-198 Lamps. Nature 180, 1476 (1957). https://doi.org/10.1038/1801476a0
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DOI: https://doi.org/10.1038/1801476a0
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