Stars don't form out of nothing, but tracking the gas and dust that do eventually form stars is hard. They float around the ...

While tunable diode laser absorption spectroscopy (TDLAS) has proved to be an effective gas sensing method, detecting hydrogen using TDLAS is difficult due to its weak light absorption property in ...

In a recent article, researchers used operando X-ray absorption spectroscopy to examine how ionomer interactions with catalysts impact hydrogen fuel cell efficiency, identifying strategies to ...

Now, cosmologists at the U. of I. say absorption features in the 21-centimeter spectrum of neutral hydrogen atoms could be used for such a test.

Learn how hot gases and can emit visible line spectra, and how they can absorb wavelengths of light. You’ll also learn about the Big Bang Theory.

The color-coding of hydrogen, although seemingly straightforward, can obscure the complexities of hydrogen production and its end-to-end impact on the environment.

Antihydrogen spectrum indistinguishable from that of hydrogen It's a new, impressive experiment, but the results are exactly what we expected.

These are called “absorption lines” because they appear in the spectrum if there is anything between the light’s source and the observer on Earth absorbing the light.

The absorption spectra of different populations of gas (L) allow us to derive the relative ... More abundances of elements and isotopes (center).