| RefNo | MS/257/1/195 |
| AltRefNo | Sa.195 |
| Previous numbers | ES1/32/195 |
| Level | Item |
| Title | Letter from John Theophilus Boileau, Simla to Humphrey Lloyd, Trinity College, Dublin |
| Date | 14 September 1841 |
| Description | Discussion regarding difficulty adjusting the horizontal force magnetometer in the temporary observatory. Refers to the horizontal force magnetometer and temperature experiments, and the vertical force magnetometer. Discussion regarding different formulas. Boileau discusses the ‘value of the horizontal intensity’ and ‘changes of the force’. Refers to terrestrial magnetism and the coefficient of the temperature. Boileau discusses readings from the horizontal force magnetometer and the horizontal intensity. Includes two diagrams depicting [the natural position of equilibrium on the vertical axis on the theodolite]. |
| Extent | 8p |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA5415 | Boileau; John Theophilus (1805 - 1886) | 1805 - 1886 |
| NA8252 | Lloyd; Humphrey (1800 - 1881) | 1800 - 1881 |