Looking at the object's faint light in near-infrared wavelengths, astronomers detected a distinct pattern of hydrogen emissions, a signature of quasars.

Velocity structures in Hydrogen Profiles: A sky atlas of neutral hydrogen emission (1973)

For a quick encore they measured the level of hydrogen emissions in the surrounding cubic parsec of space and then shut down again in boredom.

The sole road that drives into Sunspot is New Mexico State Road 6563, named for the brightest wavelength of hydrogen emission, H-alpha.

Beta Canis Minoris shows little variation in brightness, but it does display changes in the hydrogen emission coming from the gaseous disk.

R100 - approval of battery electric vehicles with regard to specific requeriments for the construction, Functional Safety and hydrogen emission.

Mz 3 has no trace of molecular hydrogen emission, whereas the M 2-9 has prominent H emission lines in the near-IR.

The use of hydrogen emission is not helpful for defining the coolest hypergiants and these are largely classified on luminosity since mass loss is almost inevitable for the class.

The catalytic converter chemically converts at least 90 per cent of carbon monoxide, nitrogen oxides and hydrogen emissions into water, nitrogen and carbon dioxide.

Blue, visible, and infrared filters were combined with a filter that isolates hydrogen emission.