AS LONG since us the year 1843 the Plumian Professor of Astonomy and Experimental Philosphy in the Univerity of Cambridge commenced a course of lectures upon practical astronomy and the use of ...

PICATINNY ARSENAL, N.J. -- The use of Global Positioning System technology is so widespread that its availability is almost taken for granted. However, there may come a time when using GPS is not an ...

ALTHOUGH primarily intended for students in civil engineering, this book is admirably adapted for a larger class of readers. A book on practical astronomy must necessarily take a lot of the ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...