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X-ray optics is the branch of optics dealing with X-rays, rather than visible light.It deals with focusing and other ways of manipulating the X-ray beams for research techniques such as X-ray diffraction, X-ray crystallography, X-ray fluorescence, small-angle X-ray scattering, X-ray microscopy, X-ray phase-contrast imaging, and X-ray astronomy.
The Keswick Theatre opened to the public on December 27 with vaudeville and the film Glorious Betsy. Shot as a silent film with some speaking sequences, the Keswick showed a silent version as the sound equipment was not yet ready. In 1955 the theatre was renovated to show CinemaScope films. [2] The theatre operated until 1980.
Annual conventions, modeled after the evangelical Keswick Conventions in England, [43] began to be held regularly in Ireland starting in 1903. Later that year, William Irvine, accompanied by Irvine Weir and George Walker, took his message to North America .
Glenside is most notable for its entertainment, including Keswick Theatre, restaurants, recreational facilities, and parks. Glenside station is one of the busiest in the SEPTA system. Glenside is located approximately eleven miles from Center City Philadelphia .
By 1932, when the association changed its name to the American Society of X-Ray Technicians, membership had reached nearly 400. Membership figures remained stable through the Depression, but surged following World War II when hundreds of military-trained radiographers returned home from the war to find jobs in civilian hospitals.
Projectional radiography, also known as conventional radiography, [1] is a form of radiography and medical imaging that produces two-dimensional images by X-ray radiation.The image acquisition is generally performed by radiographers, and the images are often examined by radiologists.
Caldwell's view (or Occipitofrontal view) is a radiographic view of the skull where the X-ray plate is perpendicular to the orbitomeatal line. The rays pass from behind the head and are angled at 15-20° to the radiographic plate. It is commonly used to get better view of the ethmoid and frontal sinuses. [1]
Varian Associates was one of the first high-tech companies in Silicon Valley. It was founded in 1948 by Russell H. and Sigurd F. Varian , William Webster Hansen , and Edward Ginzton to sell the klystron , the first vacuum tube which could amplify electromagnetic waves at microwave frequencies, and other electromagnetic equipment.