He paused to pull up photographs on the screen.
Photographs of Nebulae; Sir Robert Ball, The Earth's Beginning.
These ' Parker's invaluable series of Roman photographs may be seen at the library of the Victoria and Albert museum, at the Ashmolean museum and the Bodleian library, Oxford.
One was to use a heliometer to measure the distance between the limbs of Venus and the sun during the whole time that the planet was seen projected on the solar disk, and the other was to take photographs of the sun during the period of the transit and subsequently measure the negatives.
The photographs led to no more definite result than the observations of contacts, except perhaps those taken by the Americans, who had adopted a more complete system than the Europeans; but even these were by no means satisfactory.
On account of the relatively great strength of Ha at a considerable distance from the photosphere, the new photographs recorded flocculi at high levels previously unexplored.
Pickering, The Moon, from photographs (New York, 1904); G.
Around the world, more than a billion mobile devices that both take and send photographs are currently in use, spread even to the poorest parts of the globe.
I received from them gifts that have the gentle concurrence of the heart, books containing their own thoughts, soul-illumined letters, and photographs that I love to have described again and again.
A second easel stood with five photographs of a male adolescent.
Bibliothek zu Dresden (Leipzig, 1903), and the Crown Collection of photographs of American maps (1600-1800), selected and edited by A.
Parker's series of photographs taken in the catacombs by the magnesium light.'
-FL .A T Tumia _ Lastic., From Photographs in the Collections of the Imperial Institute.
In 1875 he was appointed director of the new astrophysical observatory established by the French government at Meudon, and set on foot there in 1876 the remarkable series of solar photographs collected in his great Atlas de photographies solaires (1904).
By the American photographs the distances between the centres of Venus and the sun, and the angles between the line adjoining the centres and the meridian, could be separately measured and a separate result for the parallax derived from each.
The photographs obtained on that occasion proved beyond doubt the solar character of the prominences or red flames, seen around the limb of the moon during a solar eclipse.
Peel, The Zoological Gardens of Europe (London, 1903); "Bulletins of the Zoological Society of New York" (with many photographs and plans of buildings and enclosures); Annual Reports of the Smithsonian Institution, Washington; G.
Photographic telescope was afterwards added, no fewer than 75,000 photographs had been obtained up to the beginning of 1901.
Henry Draper's most important contributions to science were made in spectroscopy; he ruled metal gratings in 1869-1870, made valuable spectrum photographs after 1871, and proved the presence of oxygen in the sun in a monograph of 1877.
In medieval and modern times album denotes a book of blank pages in which verses, autographs, sketches, photographs and the like are collected.
But the beautiful currents, but in the higher region shown by the hydrogen photographs the distribution of the dark flocculi suggested the operation of definite forces, though their nature remained obscure until the spring of 1908.
At that time monochromatic photographs of the sun were first made on Mount Wilson with the red (Ha) line of hydrogen, previous hydrogen photographs having been taken with H/3, Hy or HS in the blue or violet.
It is evident that by the use of a spectroheliograph of sufficiently high dispersion, photographs may be taken of vapours in the sun represented by lines narrower than those of calcium and hydrogen.
Lyman more recently has been able to obtain photographs as far down as 1030 A with the help of a concave grating placed in vacuo.
The photographs taken by Royds show the separate oscillations of each spark discharge even when the circuit only contained the unavoidable capacity of the leads.
Hayden (1829-1887) made a large collection of specimens and photographs, and with these data, together with the reports of this and the Washburn-Doane expedition, Congress was induced to reserve the area from settlement, which was done by an act approved the 1st of March 1872.
The calcium clouds or ilocculi thus recorded are invisible to the eye, and are not shown on direct solar photographs taken in the ordinary way.
Photographs of the solar disk, taken with the H or K line, show extensive luminous clouds (flocculi) of calcium vapour, vastly greater in area than the sun-spots.
The first photographs of the sun in hydrogen light were made with the spectroheliograph in 1903.
Rutherfurd's photographs of the Pleiades in 1866 entitle him to rank as a pioneer in the use of the camera as an instrument of precision; and he secured at Cordoba 1400 negatives of southern starclusters, the reduction of which occupied the closing years of his life.
(Reeves's Finding of Wineland contains fine photographs of all the vellum pages that give the various Vinland narratives.) According to Flatey Book saga, Biarni Heriulfsson, on a voyage from Iceland to Greenland in the early days of the Greenland colony, was driven out of his course and sighted new lands to the south-west.
(From photographs by C. Evans.) FIG.
(From Photographs by C. Evans.) In a very few years, however, the open pit mining was rendered impossible by the mud rushes, by the falls of the masses of barren rock known as " reef," which were left standing in the mine, and by landslips from the sides, so that in 1883, when the pit had reached a depth of about 400 ft., mining in the Kimberley crater had become almost impossible.
English Breeds Of Pig, from photographs of F.
The Swedish Expedition (17) of 1899-1902, engaged in measuring an arc of the meridian in Spitsbergen, were unusually well provided spectrographically, and succeeded in taking photographs of aurora in conjunction with artificial lines-chiefly of hydrogen-which led to results claiming exceptional accuracy.
Achille Raffray gives a description of them in Tour du monde (1879) where photographs will be found.
The multiplication of art periodicals, lectures, books, photographs, meetings of societies and gilds, museums, schools of arts and crafts, polytechnics, scholarships, facilities for travel, exhibitions, even those of the Royal Academy, to which objects of applied art are now admitted, not only encourages many persons to become workers and designers in the applied arts, but exposes everything to the plagiarist, who travesties the freshest idea before it has well left the hands of its originator.
Where accurate differential observations or photographs involving other than instantaneous exposures have to be made, the additional condition is required that the optical axis of the telescope shall accurately and automatically follow the object under observation in spite of the apparent diurnal motion of the heavens, or in some cases even of the apparent motion of the object relative to neighbouring fixed stars.
There are farther inconveniences in the use of such a telescope, viz., that the image undergoes a diurnal rotation about the axis of the horizontal telescope, so that, unless the sensitive plate is also rotated by clockwork, it is impossible to obtain sharp photographs with any but instantaneous exposures.
Subsequent photographs showed that this nebula, which consisted mainly of two incomplete rings of nebulosity, was expanding outwards at the rate of from 2" to 3" per day.
Recently the proper motions of faint stars have been determined by comparing photographs of the same region of the sky, taken with an interval of a number of years.
Barnard's photographs of its structure leave little doubt on the matter; the numerous rifts and dark openings show that its thickness cannot be very great.
From photographs by W.
Plans and photographs of the shrines were taken in 1897 by Dr F.
5, 6, 7, 8 (plate) are reproductions of the Greenwich photographs of the sun from the 30th of January to the 8th of February 1905.
Enlarged Photographs Of The Solar Surface.
Photographs Of The Sun, Taken At The Royal Observatory, Greenwich.
`Abd el-Razzaq's report to the government of India on the pilgrimage of 1858 is specially directed to sanitary questions; C. Snouck-Hurgronje, Mekka (2 vols., and a collection of photographs, The Hague, 1888-1889), gives a description of the Meccan sanctuary and of the public and private life of the Meccans as observed by the author during a sojourn in the holy city in1884-1885and a political history of Mecca from native sources from the Hegira till 1884.
From Photographs by J, Maclardy.
British Breeds Of Sheep, from photographs by F.
Lyons, A Report on the Island and Temples of Philae (Cairo, 1896), with numerous plans and photographs; a seco!.d report, A Report on the Temples of Philae (1908), deals with the condition of the ruins as affected by the immersions occasioned by the filling of the Assuan dam; Baedeker's Egypt; and on the effects of the submersion, &c., reports in Annales du service des antiquite's, vols.
In diameter, which afforded the first indications of the spiral structure shown in recent photographs to be the most prevalent char- Lord acteristic of nebulae.
The taking of photographs of the moon then excited much interest among astronomical observers of various countries.
Bond at the Harvard observatory, De la Rue in England, and Rutherford in New York, produced lunar photographs of remarkable accuracy and beauty.
(From Photographs by F.
(From Photographs by F.
The article is illustrated by excellent photographs and gives a bibliography.
This lens is employed in articles found in tourist resorts as a magnifying glass for miniature photographs of the locality.
The horizontal position is sometimes necessary if photographs are to be taken by the microscope.
Edition is accompanied by a set of photographs of a 14th-century ivory casket, on which the story is depicted in 36 compartments.
The monuments at Sanchi are now under the charge of the archaeological department; they are being well cared for, and valuable photographs have been taken of the bas-reliefs and inscriptions.
In 1874 she began making photographs of the sun, and for years she made a special study of Jupiter and Saturn.
Excited to emulation and employing the more rapid wet-collodion process, he succeeded before long in obtaining exquisitely defined lunar pictures, which remained unsurpassed until the appearance of the Rutherfurd photographs in 1865.