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Rigge v. Dean exchange on Halley’s Comet and Pope Callixtus III
The Rigge v. Dean exchanges were a series of articles between Fr. William Rigge, S.J. and John Dean debating the historicity of the stories surrounding Pope Calixtus III and Halley's Comet that appeared in Popular Astronomy ...
Realm of Science January 20th 1917
First Paragraph: | The American Association for the Advancement of Science is the largest scientific society in America. It was established in 1848 and numbers over eleven thousand members. Its presidents have been the ...
Realm of Science December 20th 1913
First Paragraph: | While wireless telegraphy may justly be called one of the greatest inventions of our day, its use has spread so rapidly and its manipulation is mastered by so many youthful amateurs, that it behooves ...
Realm of Science November 20th 1915
First Paragraph: | The Lick Observatory on Mount Hamilton, in California, fills a glorious chapter in the history of astronomy. Thoroughly familiar as the writer was with its inception, growth, outfit, personnel, and work, ...
First Paragraph: | In this age of large telescopes that are all exclusively photographic and devoted to the detailed analysis of the heavenly bodies, it would seem that visual observations and comprehensive surveys had ...
First Paragraph: | One way of drawing a cardioid is to make a pen start in phase 90° from the center of a disk and move along a radius with simple harmonic motion, while the disk revolves with a uniform angular speed of ...
Identification of Wires in a Cable
First Paragraph: | For telephone men and others who are accustomed to handle cables with hundreds of wires in them, their identification is mere child’s play, as it is done by the color or character of its insulation, its ...
Double Star Systems
First Paragraph: | The continual increase in the number and size and perfection of astronomical instruments, together with the progress in the skill of men that use them and study and measure and discuss their results, are ...
The Eclipses of 1906
First Paragraph: | During the year 1906 there will be three partial eclipses of the sun and two total eclipses of the moon. One of each class will be visible in the United States.
The Transit of Mercury, November 14, 1907, as Visible in the United States
First Paragraph | The United States will be very unfavorably situated for viewing the coming transit of Mercury on November 14,1907. About one-third of the states will not see the planet at all upon the Sun’s face, and the ...