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Eddie Sierra’s Reviews > Understanding Physics > Status Update

Eddie Sierra
Eddie Sierra is on page 276 of 833
In book II, the section on refraction is pretty awesome.
— Jul 08, 2026 06:58PM
Understanding Physics (Motion, Sound, and Heat / Light, Magnetism, and Electricity / The Electron, Proton, and Neutron)

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Eddie Sierra
Eddie Sierra is on page 50 of 833
I can feel my imagination expanding
— Jun 24, 2026 03:34PM
Understanding Physics (Motion, Sound, and Heat / Light, Magnetism, and Electricity / The Electron, Proton, and Neutron)


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