Question

Write the uses of radioactivity in the industrial field.

Answer 1

Radioactivity is used the industrial field as follows:

- Gamma rays from the isotopes like cobalt-60, iridium-192 are used in the radiography camera to detect the Internal cracks and voids in cast iron articles and iron solder. This technique is applied to detect flaws in metal work.

- Some isotopes are used to measure thickness, density and level in the manufacture of aluminium, plastic, iron sheets of differing thickness.

- Radium, promethium and tritium with some phosphor are used to manufacture certain objects visible in the dark as they provide luminescence. These include the hands of a clock and certain other objects. Krypton-85 is used in HID (High Intensity Discharge) lamps, while promethium-147 is used in portable X-ray units as the source of beta rays.