Reference numberMS/257/1/195
Alternative reference numberSa.195
Previous numbersES1/32/195
TitleLetter from John Theophilus Boileau, Simla to Humphrey Lloyd, Trinity College, Dublin
Date14 September 1841
DescriptionDiscussion 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].
Physical descriptionInk on paper
Access statusOpen
Fellows associated with this archive
NA5415Boileau; John Theophilus (1805 - 1886)1805 - 1886
NA8252Lloyd; Humphrey (1800 - 1881)1800 - 1881
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