Hydrogen-alpha
id:
hydrogen-alpha-240-18506371
title:
Hydrogen-alpha
text:
Hydrogen-alpha, typically shortened to H-alpha or Hα, is a deep-red visible spectral line of the hydrogen atom with a wavelength of 656.28 nm in air and 656.46 nm in vacuum. It is the first spectral line in the Balmer series and is emitted when an electron falls from a hydrogen atom's third- to second-lowest energy level. H-alpha has applications in astronomy where its emission can be observed from emission nebulae and from features in the Sun's atmosphere, including solar prominences and the ch
brand slug:
wiki
category slug:
encyclopedia
description:
Deep-red spectral line of hydrogen
original url:
https://en.wikipedia.org/wiki/Hydrogen-alpha
date created:
date modified:
2024-04-07T14:17:21Z
main entity:
{"identifier":"Q585943","url":"https://www.wikidata.org/entity/Q585943"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/9/93/Bohr_atom_model.svg","width":310,"height":270}
fields total:
13
integrity:
15