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 ...

Alluxa introduces two Hydrogen Alpha (H-Alpha) Emission Line Filters that are revolutionizing the ultra-narrow optical filters market. Though these new filters have been specifically tailored to ...

As zero-emission cars gain in popularity, you can expect to hear more about sustainable trains. The first zero-emission, hydrogen-powered ... operate on the Arrow line of the Metrolink train ...