RefNo | MS/257/5/55 |
AltRefNo | Sa.1735 |
Previous numbers | ES5/16/1735 |
Level | Item |
Title | Letter from John Welsh, Kew Observatory to Edward Sabine |
Date | 26 December 1854 |
Description | Regarding the ‘law of the change of dip’. Welsh argues it should be taken into consideration modern observations are more accurate than older observations. Welsh has examined Mr [Christopher] Hansteen’s London observations and discusses his hypothesis regarding a uniform change of dip. Includes a table depicting values of the differences according to the ‘uniform hypothesis’ and Hansteen. Discussion regarding the ‘old observations. Reference to the dip decreasing in London for the past 100 years. Discussion regarding the Paris observations sent by Hansteen. Remarks on the Berlin results. |
Extent | 5p |
Format | Manuscript |
PhysicalDescription | Ink on paper |
AccessStatus | Open |
Fellows associated with this archive
Code | PersonName | Dates |
NA1680 | Welsh; John (1824 - 1859) | 1824 - 1859 |
NA8279 | Sabine; Sir; Edward (1788 - 1883) | 1788 - 1883 |