An eye blister is a benign growth which can appear on the whites of the eyes or on the cornea itself. There are two main types of eye blister: pinguecula and pterygium.
Before x ray machines were invented, broken bones, tumors and the location of bullets were all diagnosed by physical examination and a doctor's best guess. Patients paid the price of these approaches. Then on November 8th of 1895, a German physics professor Wilhelm Conrad Roentgen made a remarkable discovery.
Wilhelm Conrad Roentgen-RÃ¶ntgen First-x. Ray a week after his, Discovery rontgen took An-x ray photograph of his'wife s hand which clearly revealed her wedding ring and her. Bones the photograph electrified the general public and aroused great scientific interest in the new form of. radiationalcium in bones absorbs X-rays the most, so bones look white on a film recording of the X-ray image, called a radiograph. Fat and other soft tissues absorb less, and look gray. Air absorbs the least, so lungs look black on a radiograph.