United States or United States Virgin Islands ? Vote for the TOP Country of the Week !
He then turned to science, was appointed in 1813 to a professorship of astronomy and mathematics, and began regular work in the Dorpat Observatory just erected by Parrot for Alexander I. It was not, however, until 1819 that the acquisition of a 5-foot refractor by Troughton enabled him to take the position-angles of double stars with regularity and tolerable precision.
Then there are the 5-foot Yerkes reflector at Chicago, and the 4-foot by Grubb at Melbourne.
After awhile, Tom's line grew taut, and we hauled in a 5-foot barracouta, a bar of silver with a long flat head, all speed and ferocity, and wonderful teeth. "Look!" said Tom, as he pointed to a little writhing eel-like shape, about nine inches long, attached to the belly of the barracouta. "A sucking fish!" said Tom.
Its prerogatives in nebular photography were splendidly indicated in 1899 by Professor Keeler's exquisite and searching portrayals of the cloud-worlds of space, and those obtained two years later, with a similar, though smaller, instrument, by Professor Ritchey of the Yerkes Observatory, were fully comparable with them. The performances of the Yerkes 5-foot reflector still belong to the future.
The satisfactory nature of its performance is vouched for by the observations made with it upon Jupiter's new satellite in December, 1892. This instrument, to which a Newtonian form has been given, had no rival in respect of light-concentration at the time when it was built. It has now two the Paris 50-inch refractor and the Yerkes 5-foot reflector.
Should I calculate the lands to be mowed one at a time in even swaths? The mower being 5-foot cut, would you count on cutting a 4 1/2 or 5-foot swath? This soil is sandy, water percolating rapidly. The fall is 8 feet to the mile. How wide, then, would you advise making the ridges to suit the mower, and to flood economically, using from 2 to 4 cubic feet per second?
A friend of mine in the RAF told me that on one station the ground crew were similarly equipped though in their case the bayonets were welded on to 5-foot lengths of electrical conduit; he said that when they came on parade it looked like the Monmouth Rebellion all over again. I don't recall much about our meals, with one exception only. Every Thursday over a long period a new cook came to us.
The only instruments in this country successfully employed for its detection are, we believe, Dr. Common's 5-foot reflector and Mr. Newall's 25-inch refractor. In the course of his observations on Jupiter at Brussels in 1878, M. Niesten was struck with a rosy cloud attached to a whitish zone beneath the dark southern equatorial band. Its size was enormous.
There are four ledges to this hill temple and above each ledge or stone path are rows of Buddhas hidden in great 5-foot stone bells, and at the top crowning the temple a great 50-foot bell in which Buddha is completely hidden from the world, symbol of the desired Nirvana that all Buddhists seek.
The first use of this plan on a large scale was in an instrument of thirty-six inches aperture, finished by Calver for Dr. Common in 1879. To its excellent qualities turned to account with rare skill, his triumphs in celestial photography are mainly due. A more daring experiment was the construction and mounting, by Dr. Common himself, of a 5-foot reflector.
Word Of The Day