This article is within the scope of WikiProject Spectroscopy, a project which is currently considered to be inactive.SpectroscopyWikipedia:WikiProject SpectroscopyTemplate:WikiProject SpectroscopySpectroscopy
Please add the quality rating to the {{WikiProject banner shell}} template instead of this project banner. See WP:PIQA for details.
This article is within the scope of WikiProject Physics, a collaborative effort to improve the coverage of Physics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.PhysicsWikipedia:WikiProject PhysicsTemplate:WikiProject Physicsphysics
This article is within the scope of WikiProject Chemistry, a collaborative effort to improve the coverage of chemistry on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.ChemistryWikipedia:WikiProject ChemistryTemplate:WikiProject ChemistryChemistry
http://en.wikipedia.org/wiki/Wikipedia:Categorization says "An article should not be in both a category and its subcategory, e.g. Microsoft Office is in Category:Microsoft software, so should not also be in Category:Software. ". Absorption band is assigned both Electromagnetism and Physics, I feel its redundant. Electromagnetism, Spectroscopy would be more appropriate.