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A shoe-fitting fluoroscope was a metal construction covered in finished wood, approximately 4 feet (1.2 m) high in the shape of short column, with a ledge with an opening through which the standing customer (adult or child) would put their feet and look through a viewing porthole at the top of the fluoroscope down at the X-ray view of the feet ...
Buy one, get one free. " Buy one, get one free " or " two for the price of one " is a common form of sales promotion. Economist Alex Tabarrok has argued that the success of this promotion lies in the fact that consumers value the first unit significantly more than the second one. So compared to a seemingly equivalent "Half price off" promotion ...
An X-ray generator generally contains an X-ray tube to produce the X-rays. Possibly, radioisotopes can also be used to generate X-rays. [1]An X-ray tube is a simple vacuum tube that contains a cathode, which directs a stream of electrons into a vacuum, and an anode, which collects the electrons and is made of tungsten to evacuate the heat generated by the collision.
Natural X-ray sources: Astrophysical X-ray source, as viewed in X-ray astronomy. X-ray background. Naturally occurring radionuclides. Artificial X-ray sources. Radiopharmaceuticals in radiopharmacology. Radioactive tracer. Brachytherapy. X-ray tube, a vacuum tube that produces X-rays when current flows through it.
Endicott Johnson Corporation. The Endicott-Johnson Shoe Company (" E-J ") was a prosperous manufacturer of shoes based in New York 's Southern Tier, with factories mostly located in the area's Triple Cities of Binghamton, Johnson City, and Endicott. An estimated 20,000 people worked in the company's factories by the 1920s, and an even greater ...
Nordstrom eventually settled on a shoe store that opened in 1901, called Wallin & Nordstrom. [6] Carl F. Wallin, the co-founder of the store, was the owner of the adjacent shoe repair shop. [ 5 ] John and Hilda had five children, three of whom would follow him into the family business, Everett W. (1903), Elmer J. (1904) and Lloyd N. Nordstrom.
The typical range lies between 1 ⁄ 2 to 2 ⁄ 3 inch (12.7 to 16.9 mm) for the UK/US size system and 4 ⁄ 3 to 5 ⁄ 3 cm (13.3 to 16.7 mm) for the European size system, but may extend to 1 ⁄ 4 to 3 ⁄ 4 inch (6.4 to 19.1 mm) and 2 ⁄ 3 to 6 ⁄ 3 cm (6.7 to 20.0 mm).
An X-ray spectrograph consists of a high voltage power supply (50 kV or 100 kV), a broad band X-ray tube, usually with a tungsten anode and a beryllium window, a specimen holder, an analyzing crystal, a goniometer, and an X-ray detector device. These are arranged as shown in Fig. 1. Fig. 1.