Hot gases don’t produce a continuous emission spectrum. Black hydrogen absorption lines are at the same wavelength as the bright hydrogen emission lines. Key fact Line emission spectra are ...

On the other hand experiments had shown that the spectra of solutions differed according to the dissolving medium; indeed Herr Kvmdt established the fact that the absorption band of a substance in ...

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 ...

Through their interaction, it can produce a spectral line in emission or absorption at a wavelength of about 21 centimetres. The strength of this 21 cm spectral line of hydrogen in emission is ...