The Physics Classroom Website
https://www.physicsclassroom.com/about
The pages of The Physics Classroom are made available as a service to physics students, physics teachers, and the general public. Their use is encouraged and is free of charge. Teachers who wish to use the pages either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. ...
The pages of The Physics Classroom are made available as a service to physics students, physics teachers, and the general public. Their use is encouraged and is free of charge. Teachers who wish to use the pages either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. ...
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