Record

RefNoMS/257/5/55
AltRefNoSa.1735
Previous numbersES5/16/1735
LevelItem
TitleLetter from John Welsh, Kew Observatory to Edward Sabine
Date26 December 1854
DescriptionRegarding 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.
Extent5p
FormatManuscript
PhysicalDescriptionInk on paper
AccessStatusOpen
Fellows associated with this archive
CodePersonNameDates
NA1680Welsh; John (1824 - 1859)1824 - 1859
NA8279Sabine; Sir; Edward (1788 - 1883)1788 - 1883
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