l          Applications of radiation

The applications of radiation are becoming more and more extensive in our daily lives. In medical use, radiations can provide images for identifying abnormal changes in body organs and tissues; they can also be used in therapy treatments, such as destroying cancer cells.  In industrial applications, radiations are used to image defects in welds and metal castings; they are also used in automatic quality control systems in production lines, such as to gauge fluid level in beverage cans, and to measure the thickness of electroplates.  Radiations can also be used in archaeological (for dating the antiquities), agricultural (for sterilizing pest and fertilizer tracers), making consumer products like smoke detectors, luminous signs, radioactive lightning conductors, etc.