This adds a new electronic level to the three already obtained (Dieke and Hopfield, Oakland Meeting of the American Physical Society, June 1926) from the hydrogen emission spectrum. A continuous ...

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 ...

Hydrogen gas is a promising energy source with several advantages - it is lightweight, storable, energy-dense, and ...

Hydrogen burns at a higher temperature, which leads the production of up to three times as much nitrogen oxides (NOx) than the burning of natural gas. NOx emissions are air pollutants which are ...

Hydrogen gas is a promising energy source with several advantages—it is lightweight, storable, energy-dense, and ...

With 2030 as the first major signpost on the energy transition roadmap, it is becoming clear that industry is not on track to ...