Taking Pictures of Objects 330 Miles Away Unseen by the Eye: Snapping Speeding Bullets By Dk Wauten Coane of the Kodak Research Laboratories interested in photography. But Jew are aware of the inestimable mankind some of these benefits are graphically this article. {han three hundred years ago " censor of the Holy Spanish
eereetrmination thet the dried ink could be felt as a ridge upon the paper he exception of, Theodor de Bry's "Vovages." took such' strong
He thought the words had been abut erated. for all time. But he reckoned lemout the camera end. 20th century pontus, Without removing the ink the Camera Nes read. the jealously guarded secret. This 4s but one of the many Srarocis of modern sclentife Photography described in the following:—
'A rail-coach axle breaks, An iron casting of a machine gives way. Lives "The cause of the and metal.
'X-ray photography reveals the Janest ultimate architecture of matter, fas well az its coarse structure, The fine of Une microscope is the Study of the minute. In. the hands of the biologist it has revealed much about the life processes themselves—the way of living matter grows, the ature of disease. The photograph through the microscope is used engineers in routine control of the manufacture of metal alloys, tungsten Slaments of incandescent lamps and radio valves, opal glass, textile fab-'Hes, and innumerable" articles of various kinds, 'When It Was Discovered 'One day in 1896, the French physicist, Professor Becquerel, placed a piece of ore of the rare' element Sranium ona" photographic pla wrapped them up in black paper. and put them away in a drawer in. the fork. When he developed the plate, found that it carried a picture of This excited the curiosity fof Monsieur and Madame Curie, who endeavoured to find out why the ore /acted in this peculiar way. 'They dis-[covered radium, formed by the breaking down of uranium, and in turn, breaking down to form the common lead. Photography thus pro~ Vided' the clue which chemists and physicists had long sought—the clue taken by the Manchus in their wars against the famous Coxinga, who has already been briefly mentioned. At one time the imperial authorities in Fukien ordered that all the population should move thirty Li (ten miles) from the coast and forbade all communication with the sea. The orders proved too sweeping to be carried out, besides rousing the animosity of the fisherfolk who were thus deprived of their living. They thus assisted In enabling Coxinga at a later date to harry the coast once again and recapture towns which the Manchus had taken from him. The Manchus had a way with them if anyone had. On learning of the revival of the pirate menace off Fukien they appointed a Marquess Pacificator of the Seas and left it to him to do what he could about it, Enormous fleets would be assembled st different places by the simple process of commandeering all Junks and fishing craft and making slight changes in their appearance.
It Is not to be thought, however, that all idea of progress was absent from the naval mind. From very early times Chinese designers warships have done their share of experimenting. There is on record a picture of a boat planned in the Sung dynasty which is a combination of a galley and sailing ship, having four oars on each fand two masts like those of the junks of to-day, and in addition four paddle wheels, two on each side, which were worked by manpower. In some later designs of similar vessels the paddle wheels were supposed to be worked by wind-power, but there is no record fof how successful the method was. Under the influence of the impact Jof the west following upon the invasion of this part of the world by European traders, there were considerable improvements in (Chinese naval design, and when, Tate in the last century, cadets were sent-to Britain for instruction in modern naval warfare, great steps were taken to improve the Chinese fleet. Funds ran out, however, and the movement, which had great possibilities at first, has only been kept alive by the devotion of a few enthusiasts." to they structure of the atom, which
solar' system, moreover, Was sexs shown to Fesemble a mnlature proved to be not a hard invisible thing, but a thing full of life, ble to change and give rise 10 other atoms.
few months before Becquere!'s experiment, Roentgen had discovered 'Xcrays. He had found that when an the electric current was passed through fan evacuated tube, not only did the Glass of the tube glow green, but Something was given off from' the photographie plate through an opaque, Solid material such as a board. Within a few weeks, scientists all over the world were looking inside the human dody—using X-rays as light, and the Photographic plate as the eye.
Text read from the printed page and cleaned; old type leaves the occasional error.