How Do Flatlanders Move?

None of this actually explains how Flatlanders move. We know various things about their locomotion; that travelling somewhere involves some form of effort, that it is harder to travel North than in other directions, especially for women, and that femails "undulate" as they travel, although this is more of a safety measure than a necessity. A mundane explanation, but one that causes a few problems, is the use of very short cilia-like mobile hairs for propulsion. This assumes that Flatland ai...

 Richard Feynman Describes the Waves Running Through Our E...

Try to imagine what the electric and magnetic fields look like at present in the space of this lecture room. First of all, there is a steady magnetic field; it comes from the currents in the interior of the earth - that is, the earth's steady magnetic field. Then there are some irregular, nearly static electric fields produced perhaps by electric charges generated by friction as various people move about in their chairs and rub their coat sleeves against the chair arms. Then there are other m...