| 1 | The first one, again, is by Faraday. | |
| 2 | But Faraday cages can be costly. | |
| 3 | The discovery was foreseen more than 150 years ago by Michael Faraday, the father of electricity. | |
| 4 | And building a conventional Faraday cage round a naval vessel would be horribly expensive. | |
| 5 | A Faraday cage is a shield of conductive material that stops electromagnetic radiation penetrating. |