| It has been used in gauge theory, instantons, monopoles, string theory and the theory of anomalies. |
| Common HF antennas like vertical monopoles, horizontal wire dipoles, and loop antennas all provide omni-directional communications when configured properly. |
| As the universe expands, the theories suggest, monopole density becomes very much smaller and thus monopoles would be more difficult to find. |
| Yet particle theories like Grand Unified Theories and superstring theory predict magnetic monopoles should exist. |
| A regular theory of magnetic monopoles and its implications. |
| Gauss's law for magnetism describes magnetic fields as closed field lines not due to magnetic monopoles. |
