IN view of the considerable attention given to the secondary spectrum of hydrogen in recent investigations ... About 170 additional lines to those recently published by Allibone (Proc.

Hot gases don’t produce a continuous emission spectrum. Black hydrogen absorption lines are at the same wavelength as the bright hydrogen emission lines. Key fact Line emission spectra are ...

IT is usually considered that molecular hydrogen does not have an infra-red rotation-vibration spectrum. However, such a spectrum may be expected as a forbidden transition made possible by the ...

A Nooelec Sawbird+ H1 acts as preamp and filter for the 1420-MHz hydrogen line signal, which feeds into an RTL-SDR dongle. Careful attention is paid to proper grounding and shielding to keep the ...

Each of the spectra has a set of absorption lines created by the presence of hydrogen in the stars' atmospheres. Order the spectra, starting with the one that is moving the fastest toward us and ...