Reference numberMS/119/1/114
TitleLetter from Edward Sabine, Woolwich to Humphrey Lloyd
Date18 April 1848
DescriptionSabine updates Lloyd on the observations he has made today. The deflecting magnet Sabine used is not the strongest, and he discusses the degree to which it deflected a needle in comparison to stronger magnets. Sabine intends to find the reason for this weakness when the magnets are of the same size, dimension, shape and made by the same ‘artist’. Discussion on the dip and the greatest deflection achieved. Saine intends to get a new magnet tomorrow and discusses the observations he will take. Sabine discusses the dip at Melville Island [where he conducted a magnetic survey with William Edward Parry and James Clark Ross in 1819]. Sabine recommends sending a declinometer read by microscopes with each ship, and not a vertical force instrument or bifilar. Sabine compares the deflection at Woolwich and Melville Island and notes it will be considerably less at Melville Island. Sabine discusses the ships being detained by the ice, and observations being made on the ice.
Physical descriptionInk on paper
Access statusOpen
Fellows associated with this archive
NA8279Sabine; Sir; Edward (1788 - 1883)1788 - 1883
NA8252Lloyd; Humphrey (1800 - 1881)1800 - 1881
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