| Year | 1926 |
| Date | 29-Jul |
| Volume | 55 |
| Issue | 1,316 |
| Page | 110 |
| Category | Electrical |
| Part | 5 |
| Title | On Electrical Condensers |
| Author | Capt. Q.C.Crauford |
| Notes | Two condensers compared by gravity, dielectric stress or attraction in place of gravity (Kelvin balance), analogy between balanced circuit and pair of scales, between thermionic valves and atmosphere electricity |