Essential Guide to the EU – Chapter 4
Electromagnetism

4.1  The Electromagnetic Field Equation Scientists attempt to explain physical systems in terms of mathematical models which describe and predict the behavior of the system. For example, Kepler explained the movement of the planets with his three laws. In the same way, plasma behavior is governed by the electromagnetic field …

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Shots in the Dark Part Two

Sep 20, 2011 The previous Picture of the Day described several of the many myths that refer to a celestial chain of arrows or a celestial ladder. It asked, how is this theme to be explained? A significant pointer is the realisation that stories concerning the arrow-chain form a subset …

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