These 'Fraunhofer' lines are due to the absorption of light of specific frequencies by the gases in the upper atmosphere of the sun. \(1\). Line spectra are produced when electrons move from one ...

187. David M. Slocum, "Molecular line shape analysis at terahertz frequencies using multispectral fitting," Ph.D. dissertation, Dept. Physics and Applied Physics ...

transitions due to these can be seen in very long absorbing paths such as are present in the atmosphere. This report shows that absorption in the solar spectrum near 4.2µ is due to collision ...

Astronomers have detected the most promising signs yet of a possible biosignature outside the solar system, although they ...

It provides critical insights into the molecular structure and composition of materials by measuring their infrared absorption spectra. This article delves into the definition, principle of operation, ...

analysing how starlight passing through the planet’s atmosphere was absorbed by different molecules, revealing dark absorption lines in the spectrum. The sulphur dioxide likely originates from ...