Radioactivity finds in uses in a surprisingly large number of fields,right from medicines to food preservation.When radioactive rays are used to treat diseases,the process is called radiotherapy.This is an effective t...Radioactivity finds in uses in a surprisingly large number of fields,right from medicines to food preservation.When radioactive rays are used to treat diseases,the process is called radiotherapy.This is an effective treatment for various forms of cancer.During this process,a high dose of gamma rays pass through the rapidly-growing immature cancerous cells to destroy them.This kills the malignant cells,but leaves the normal cells unharmed.展开更多
文摘Radioactivity finds in uses in a surprisingly large number of fields,right from medicines to food preservation.When radioactive rays are used to treat diseases,the process is called radiotherapy.This is an effective treatment for various forms of cancer.During this process,a high dose of gamma rays pass through the rapidly-growing immature cancerous cells to destroy them.This kills the malignant cells,but leaves the normal cells unharmed.
