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DETERMINING THE TRUE MERIDIAN The three methods best adapted to the needs of an engineer are : ( a ) by observing with ordinary ... In solar observations certain times of day are more favorable than others , while at certain times the ...
If n be seconds of time between observations and h the altitude , degrees , the refraction in minutes equals 2 000 + h X n . Add this correction to north declinations , and subtract from south declinations . The latitude used in solar ...
The mean position of the wire is calculated by observations on the two scales . The bob is then disconnected , and the wire threaded through a fine hole in the brass plug screwed into the square block ; the latter is then placed between ...
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LibraryThing ReviewUlasan Pengguna - wackyvorlon - LibraryThing
I only have the second volume of this work, and I love it! Found at a local Value Village, it is filled with fascinating information. Details of all aspects of mine engineering, including compressed air, ventilation, and supporting structures. Baca ulasan lengkap
Conditions Methods in General
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