## Philosophy Lexicon of Arguments | |||

Author | Item | Excerpt | Meta data |
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Feynman, Richard Books on Amazon |
Vectors | I 165 Vector/Feynman: any physical quantity associated with three numbers that transform like the components of a step in space is a vector. (i.e. invariant under rotation or shifting of the axis system). An equation like F = R would thus be correct in any coordinate system if it is correct in one. I 166 Vectors/Feynman: the fact that a physical relation can be expressed as a vector equation assures us that the relationship remains unchanged by a simple rotation of the coordinate system. Vectors: e..g momentum, speed, force, acceleration. We can represent force by arrows, because it has the same mathematical transformation properties as a "step in space". The step is then a selected unit of force. For example, if we represent force by a length, we still need a constant k: F = kr. Important Point: after drawing the lines we no longer need the axes! ((s) If there are several lines, they are related to one another, which makes the axes superfluous). |
Fey R. Feynman Vom Wesen physikalischer Gesetze München 1993 Fey I R. Feynman Vorlesungen über Physik I München 2001 |

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Ed. Martin Schulz, access date 2017-04-28