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Science -- Physics
Oersted and the Discovery of Electromagnetism
This page, authored and curated by David P. Stern, and its annex describes, in trivial terms, the physics of magnetic fields and the history of its discovery. Included is the work of Halley, Oersted, Ampere and Maxwell....
Discovery of the Magnetic Compass
First of several linked files, telling the early history of the compass (discovered in China) and how Robert Norman in 1581 showed the magnetic force was not horizontal but slanted downwards, followed by William...
Common Sense Concepts About Motion
In this article we will not attack the difficult problem of designing instruction to accommodate CS preconceptions. But let us note that CS concepts experience providing meaning to our natural language. Discourse on...
Magnetic Substorms, Storms and Space Weather
This web page, created by David P. Stern, describes magnetic substorms and storms, their properties, and their relations to charged particle flow and auroras. It includes descriptions of the magnetic field changes in...
A Sense of Scale
Created by Paul Falstad, this page compares the distance/magnitude/size of various objects or constants. This includes physical dimensions such as the diameter of particles, atoms and biological cells, the height of Mt....
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