Fraunhofer lines
E556416
Fraunhofer lines are the dark absorption lines observed in the solar spectrum that reveal the presence and properties of elements in the Sun’s atmosphere and intervening gases.
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
absorption lines
ⓘ
solar spectral features ⓘ spectral lines ⓘ |
| appearAs | dark lines on a continuous spectrum ⓘ |
| associatedElement |
calcium
ⓘ
helium ⓘ hydrogen ⓘ iron ⓘ magnesium ⓘ nitrogen ⓘ oxygen ⓘ sodium ⓘ |
| causedBy |
absorption of light by atoms in the Earth’s atmosphere
ⓘ
absorption of light by atoms in the solar atmosphere ⓘ |
| discoveredBy | Joseph von Fraunhofer NERFINISHED ⓘ |
| discoveryYear | 1814 ⓘ |
| fieldOfStudy |
astrophysics
ⓘ
solar physics ⓘ spectroscopy ⓘ |
| namedAfter | Joseph von Fraunhofer NERFINISHED ⓘ |
| notableExample |
Fraunhofer A line
NERFINISHED
ⓘ
Fraunhofer B line NERFINISHED ⓘ Fraunhofer C line NERFINISHED ⓘ Fraunhofer D lines NERFINISHED ⓘ Fraunhofer E line NERFINISHED ⓘ Fraunhofer F line NERFINISHED ⓘ Fraunhofer G line NERFINISHED ⓘ Fraunhofer H line NERFINISHED ⓘ Fraunhofer K line NERFINISHED ⓘ |
| numberOfIdentifiedLines | hundreds ⓘ |
| observedIn |
daylight spectrum
ⓘ
solar spectrum ⓘ stellar spectra ⓘ |
| physicalOrigin | atomic absorption of specific wavelengths ⓘ |
| relatedConcept |
Kirchhoff’s laws of spectroscopy
NERFINISHED
ⓘ
absorption spectrum ⓘ emission lines ⓘ |
| spectralRegion |
near infrared
ⓘ
near ultraviolet ⓘ visible light ⓘ |
| usedFor |
calibration of spectrographs
ⓘ
determination of solar atmospheric composition ⓘ determination of solar atmospheric pressure ⓘ determination of solar atmospheric temperature structure ⓘ determination of solar rotation ⓘ identification of chemical elements in stars ⓘ identification of chemical elements in the Sun ⓘ measurement of magnetic fields via Zeeman effect ⓘ measurement of radial velocities via Doppler shift ⓘ measurement of stellar surface gravities ⓘ measurement of stellar temperatures ⓘ study of interstellar medium absorption ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.