The computer converts the data into an image that is displayed on a monitor. The machine shoots a pencil-thin beam of X rays at the body from many angles. Detectors measure the rays that pass through and send the measurements to a computer. The computer then uses the measurements to create the images. In industry, inspectors use X rays to examine products made of various kinds of materials, including aluminum, steel, and other cast metals.
Radiographs reveal cracks and other defects inside the products.
Workers also use X rays to check the quality of mass-produced products, such as computer chips and other small electronic devices. Scanners at airports use X rays to check baggage for weapons or bombs. In crystal research, X rays help scientists determine the arrangement of atoms that make up crystals. The atoms in crystals are arranged in planes, with regular spacing between the planes. Each type of crystal produces a different diffraction pattern.