• Anglický jazyk

Henderson, T: Astronomical Observations Made at the Royal Ob

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Excerpt from Astronomical Observations Made at the Royal Observatory, Edinburgh, Vol. 5: For the Year 1839

In reading off the observations the cross-wires of the Microscopes were made to bisect the sets of divisions immediately preceding the zero... Viac o knihe

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O knihe

Excerpt from Astronomical Observations Made at the Royal Observatory, Edinburgh, Vol. 5: For the Year 1839

In reading off the observations the cross-wires of the Microscopes were made to bisect the sets of divisions immediately preceding the zero point of Microscope I, when this Microscope indicated a quantity less than 2' 30 to be added to the degrees and minutes of the preceding division; and the sets immediately follow ing the same point, when' the quantity indicated to be added was greater than 2' 30 except the observations distinguished by asterisks in the column of Object observed, in which the reverse rule was observed. The mean values of the runs of the Microscopes for the different portions of the year are given in the Table, p. 134, being the means of values found from sets of readings made at the begin ning and end of each period.

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  • Vydavateľstvo: Forgotten Books
  • Formát: Paperback
  • Jazyk: Anglický jazyk
  • ISBN: 9781334033070

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