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This video presents the different absorption spectra. The absorption spectra of lines that are obtained from cold gas and the absorption spectra of bands that are obtained from solution. 00:00 - Presentation of the experimental device 00:20 - Absorption spectrum of a cold gas 01:18 - Absorption spectrum of a liquid 02:04 - Summary ???? 1st year class program (high school): Theme: Waves and signals. Part: Spectrophotometry Find other videos and methodological sheets to download for free: https://eprofs.fr Twitter: / e_profs Instagram: / e_profs_physique_chimie Facebook: / e-profs-467482426970398