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Model the workings of a sophisticated research instrument while studying the fundamental properties of charged particles. In the experiment, metal spheres with different masses are passed over a magnet and their trajectories altered in a consistent, but surprising, way. Understanding this discrepant event requires close observation, inquiry skills, and the scientific method. At the end of the activity, students learn they have just modeled the working principle of a mass spectrometer! Activity table measures 24 x 24 x 2". Instructions included.
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