Class: _21CmLine

http://www.astro.umd.edu/~eshaya/astro-ont/owl/astronomy.owl#_21CmLine

Thing
- recombinationLine
  - radioRecombinationLine
    - _21CmLine

Annotations

altLabel: "21 cm line" (string)
label: "21-cm line" (string)

Superclasses

radioRecombinationLine