Self Instruction in Navigation to Which is Added Some Useful Miscellaneous Info
Self Instruction in Navigation to Which is Added Some Useful Miscellaneous Info
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T. ~~ Cor. DecT" 12 90 G. M. A. T. P.
24 Dip. - S. D. + Int. From noon F= hrs. Ref . - Par. + _ i Obs. Alt. Cor. + Cor. + h. Sec.
Lat. Sec.
P- 2) s. Cos.
P- s-p. Cos.
2 I i T. Az. Cos.
T. Az. Comp, Az. Comp. Error Var.
Dev.
(32) The azimuth may be taken at any time but the most fav- orable is when the altitude is low. It is often taken at the meridian passage using the apparent time of passage when the sun bears South (or North) but this bearing is apt to be unreliable. It is always a good plan... to take a bearing at the time of taking a Long, sight, and can then be worked in unison, thereby saving some labor. If the problem is to be worked out, add together the corrected alt. Lat. And p. , take the half sum and subtract p. If p. Is greater than the half sum (s) the term s-p. Will have a negative value but this does not affect the result. From Table 44 take the sec. Of the Alt. , sec. Of the Lat. , cos. Of the half sum, and cos. Of the rem. Half the. Sum of these four logs will be the cos.
What to read after Self Instruction in Navigation to Which is Added Some Useful Miscellaneous Info?
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To quickly assess the difficulty of the text, read a short excerpt:
T. ~~ Cor. DecT" 12 90 G. M. A. T. P.
24 Dip. - S. D. + Int. From noon F= hrs. Ref . - Par. + _ i Obs. Alt. Cor. + Cor. + h. Sec.
Lat. Sec.
P- 2) s. Cos.
P- s-p. Cos.
2 I i T. Az. Cos.
T. Az. Comp, Az. Comp. Error Var.
Dev.
(32) The azimuth may be taken at any time but the most fav- orable is when the altitude is low. It is often taken at the meridian passage using the apparent time of passage when the sun bears South (or North) but this bearing is apt to be unreliable. It is always a good plan... to take a bearing at the time of taking a Long, sight, and can then be worked in unison, thereby saving some labor. If the problem is to be worked out, add together the corrected alt. Lat. And p. , take the half sum and subtract p. If p. Is greater than the half sum (s) the term s-p. Will have a negative value but this does not affect the result. From Table 44 take the sec. Of the Alt. , sec. Of the Lat. , cos. Of the half sum, and cos. Of the rem. Half the. Sum of these four logs will be the cos.
What to read after Self Instruction in Navigation to Which is Added Some Useful Miscellaneous Info?
You can find similar books in the "Read Also" column, or choose other free books by Henry Libby Thompson to read onlineMoreLess
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