Emission Bands in the Mercury Spectrum under Low Excitation.

IN a letter published under the above title in NATURE of May 2, it was stated that the series of bands which appear in absorption of the unexcited vapour in the region from λ2943 to λ2614 could be obtained in fluorescent emission by exciting with the iron arc in the region on the long wave side of the resonance line λ2537. It is not necessary to excite… CONTINUE READING