Preliminary Survey And Estimates
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In our eReader you can find the full English version of the book. Read Preliminary Survey And Estimates Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Preliminary Survey And Estimates
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To quickly assess the difficulty of the text, read a short excerpt:
May 15 to 31, , . . - . 3 50 to 2. \ June I to 15, ,.. , . 2\ to o June 15 to 30 Sun after clock ' . O to 3^ July I to 26, , . . . 3i to 6 July 26 to 31, ... 6}- to 6 L 2 140 Preliminary Survey minutes minutes August Sun before clock . . 6 to o September, . . . O to loj October, , . - . . Io to l6 November, . . . - i6 to n December I to 25, . . . 11 to o December 25 to 3 1 Sun after clock . . O to 3^ The surveyor can hardly be anywhere on land nowa- days where he cannot tell his position within... 100 miles from some point given on an ordinary atlas.
The maximum error in equation of time at say a latitude of 70 (which is about as far north as he can go) for a distance error of 100 miles would only be -33 of a second ; we may therefore safely say that the surveyor can always obtain, for the purposes of his calculation, the equation of time, and when he observes apparent noon, by applying the equation of time he has the mean time at place.
Example. On December 18, 1890, in longitude by account 157 W.
What to read after Preliminary Survey And Estimates?
You can find similar books in the "Read Also" column, or choose other free books by Theodore Graham Gribble to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
May 15 to 31, , . . - . 3 50 to 2. \ June I to 15, ,.. , . 2\ to o June 15 to 30 Sun after clock ' . O to 3^ July I to 26, , . . . 3i to 6 July 26 to 31, ... 6}- to 6 L 2 140 Preliminary Survey minutes minutes August Sun before clock . . 6 to o September, . . . O to loj October, , . - . . Io to l6 November, . . . - i6 to n December I to 25, . . . 11 to o December 25 to 3 1 Sun after clock . . O to 3^ The surveyor can hardly be anywhere on land nowa- days where he cannot tell his position within... 100 miles from some point given on an ordinary atlas.
The maximum error in equation of time at say a latitude of 70 (which is about as far north as he can go) for a distance error of 100 miles would only be -33 of a second ; we may therefore safely say that the surveyor can always obtain, for the purposes of his calculation, the equation of time, and when he observes apparent noon, by applying the equation of time he has the mean time at place.
Example. On December 18, 1890, in longitude by account 157 W.
What to read after Preliminary Survey And Estimates?
You can find similar books in the "Read Also" column, or choose other free books by Theodore Graham Gribble to read onlineMoreLess
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