On a method of determining the true meridian
Kingsmill, Henry Charles (1884) On a method of determining the true meridian. Papers & Proceedings of the Royal Society of Tasmania . pp. 273-276.
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I propose to describe a method of obtaining the true
meridian by observation, which, so far as I am aware, has not been tried in this colony.
The first method is by a single observation of the sun or a
star. For this an altitude is required, also a knowledge of
the latitude. It is, therefore, open to objection on both
The second method is by equal altitudes. This requires
two observations at an interval of several hours, and is therefore
inconvenient in point of time.
The third method is by observing a single circumpolar star
at its greatest elongation.
The fourth method is by observing two circumpolar stars at
their greatest elongation, and taking the difference of their azimuths at the time of observation.
Formula and examples provided in the article. Henry Charles Kingsmill was a Lecturer in Mathematics and Physics 1896-1909, and also in Surveying 1904-09 at the University of Tasmania. Earlier he had taught at schools in Queensland and Hobart and was the Tasmanian Government Meteorologist 1892-1911.
|Additional Information:||In 1843 the Horticultural and Botanical Society of Van Diemen's Land was founded and became the Royal Society of Van Diemen's Land for Horticulture, Botany, and the Advancement of Science in 1844. In 1855 its name changed to Royal Society of Tasmania for Horticulture, Botany, and the Advancement of Science. In 1911 the name was shortened to Royal Society of Tasmania.|
|Keywords:||Royal Society of Tasmania, Van Diemens Land, VDL, Hobart Town, natural sciences, proceedings, records|
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|Deposited On:||30 Nov 2012 14:06|
|Last Modified:||30 Nov 2012 14:06|
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