Reference numberMS/119/2/141
TitleLetter from John Allan Broun, Makerstoun Kelso to Humphrey Lloyd
Date7 July 1846
DescriptionDiscussion on the balance constant. Broun argues the effect of temperature on the time of vibrations is due to changes in the distance of the centres of motion and gravity. Broun records the equation of equilibrium. Discussion on temperature corrections and its effects on the needle. Bround informs Lloyd that he conducted various experiments over the course of three years that gave differing results, but have a mean value for K. This verified the value of K and the temperature coefficient. Discussion on deflections. Broun informs Lloyd about his intentions to extend experiments to the bifilar. Broun describes the induction inclinometer, and how with adjustments the balance needle may be an efficient instrument.
Physical descriptionInk on paper
Access statusOpen
Fellows associated with this archive
NA3813Broun; John Allan (1817 - 1879)1817 - 1879
NA8252Lloyd; Humphrey (1800 - 1881)1800 - 1881
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