Word: parallaxes
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...lens and plate. The finished picture is striped. Some of the stripes show the person or thing from one angle, others from other angles. When a second glass grating is placed over the picture it makes the proper groups of stripes seem a solid photograph. The pictures are called parallax panoramograms...
That there is a general and growing dissatisfaction with the American school system goes without saying. Witnesses need no subpoena to testify on that issue. The stand is now occupied by Casper F. Goodrich, a retired Rear Admiral, who computes his parallax from the two fixed points of Professor Sidney Thomas' School at New Haven and the United States Naval Academy at Annapolis. The Naval Academy is orthodox and oldfashioned; the New Haven School is advanced and experimental. At Professor Thomas' there are no books, but rather wall maps, and mathematical games; no paper pads, but slates. Competition...
...other of the orbit 186,000,000 miles across. In spite of this very great length of base line, the shift in a stars position is so slight that it took 300 years of patient endeavor before instruments were perfected sufficiently exact to discover this so-called "parallax" which gave the clue to stellar distances. The first star to have its distance determined in this way is a faint star numbered 61 in the constellation Cygnus now visible in the eastern sky. Its distance was found to be about 60,000,000,000,000 miles, or so far away that...
...Draper Memorial, from which the spectra of 225,000 stars distributed over the entire sky have been catalogued by Miss Cannon, curator of astronomical photographs. Many of these plates were made at the South American station of the Observatory, and afford valuable material for the determination of the "spectroscopic parallax" by the Mount Wilson method, as there is a great paucity of data concerning stars in the Southern hemisphere. Professor Shapley, Director of the Observatory, has just recently published in Circulars 228 and 232 of the Observatory Publications the parallaxes and absolute magnitude for 137 stars from an examination...
...question of stellar distances is but one of the many problems that are presented to the professional astronomer, but the distances in miles which correspond to these parallax determinations tax the imagination to conceive. The contributions of astronomy in interpreting the sky and the earth's plane in the universe have exerted a profound influence on men's thinking in all ages'. For this reason, perhaps, astronomy makes so the casual star gazer who has learned to recognize familiar groups and the brighter planets...