This category is within the scope of WikiProject South America, a collaborative effort to improve the coverage of articles related to South America 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.South AmericaWikipedia:WikiProject South AmericaTemplate:WikiProject South AmericaSouth America articles
This category 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 articles
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