| RefNo | MS/257/4/49 |
| AltRefNo | Sa.1178 |
| Previous numbers | ES4/1/1178 |
| Level | Item |
| Title | Copy of a letter from Edward Sabine, Woolwich to [George Biddell] Airy |
| Date | 29 November 1848 |
| Description | Sabine replies to Airy’s letter regarding the number of assistants that should be ‘retained’, printing magnetic observations, reduction of observations, printing and reduction of meteorological observations, and should ‘meteorological matters’ ‘be kept up with amateur observers’.
Refers to hourly or two hourly observations being made for approximately five years can be used to deduce ‘mean numerical values of the diurnal variations of the magnetical and meteorological elements’. Therefore, less exertive system of observation can be used in this instance ‘safely’ in Sabine’s opinion.
Discussion regarding the diurnal variations in magnetism and meteorology, the annual and secular magnetic variations, and method of registering disturbances.
Discusses the publication and reduction of observations, refers to photographic traces, the horizontal and vertical force, inclination, and total force, and the absolute magnetical determinations. Includes a copy of a monthly meteorological register from the Toronto Observatory which depicts the barometer, temperature of air, tension of vapour, humidity of the air, wind and weather.
Sabine discusses the question whether ‘relations’ should be ‘kept up with amateur observers’ and expresses his opinion. |
| Extent | 7p |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA8279 | Sabine; Sir; Edward (1788 - 1883) | 1788 - 1883 |
| NA8035 | Airy; Sir; George Biddell (1801 - 1892); astronomer and mathematician | 1801 - 1892 |