Elektrisches Feld: Difference between revisions
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<math>{\underline{E}=-}\underline{\nabla }\phi -{\color{Gray} \frac{1}{c}}{{\partial }_{t}}\underline{A}</math> | <math>{\underline{E}=-}\underline{\nabla }\phi -{\color{Gray} \frac{1}{c}}{{\partial }_{t}}\underline{A}</math> | ||
==einer Punktladung== | |||
<math>E\left( \underline{r} \right)=\alpha \left( q\frac{\underline{r}}{\left| {{\underline{r}}^{3}} \right|} \right)</math> | |||