| RefNo | MS/603/3/46 |
| Previous numbers | 445 |
| Level | Item |
| Title | Letter from Geo Fras [George Francis] Fitzgerald, Trinity College, Dublin, to [Joseph] Larmor |
| Creator | FitzGerald; George Francis (1851-1901); Irish theoretical physicist |
| Recipient | Larmor; Sir Joseph (1857-1942); Irish theoretical physicist |
| Date | 1 March 1894 |
| Description | Fitzgerald forgot to ask Larmor what he said in answer to Lord Kelvin and his attracting vortex rings. Vortex filaments move at 90 degrees to the direction of force acting upon them because they move so that energy is constant. Fitzgerald had forgotten that currents move so that the energy of the medium increases if the current is kept constant. The essence of the subject is the difference between the force on the current and that on the matter carrying it and he would like Larmor's views. He can see how Larmor can get out of it in case of ordinary conduction circuits by making them enclosed so that spin can be increased. He notes what corresponding theory would be required for amperian currents, but he is too busy to work it out for himself. |
| Extent | 3p. |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA7971 | Fitzgerald; George Francis (1851 - 1901) | 1851 - 1901 |