The line became known as the main sequence. Competing groups of astronomers came up with different ways to categorize main ...

Hydrogen atoms consist of one proton and one electron ... On these plaques there's a handy diagram of the hydrogen spin flip transition. All other measurements on the plaque, including the ...

Two experiment collaborations, the g2p and EG4 collaborations, combined their complementary data on the proton's inner ...

Two experiment collaborations, the g2p and EG4 collaborations, combined their complementary data on the proton’s inner ...

Green hydrogen, considered a key eco-friendly fuel of the future, is primarily produced using two technologies: alkaline water electrolysis and proton exchange membrane (PEM) water electrolysis.

Plug Power in early 2024 began operating a green hydrogen production plant in Woodbine, Georgia; that plant has eight 5-MW PEM (proton exchange membrane) electrolyzers. The company also is nearing ...