Here are the reasons why one might (at any age) go to see an ob/gyn or midwife: 1  To get birth control. 2  To have STI testing -- if you're experiencing symptoms, or you've had unprotected sex, you should probably have some STI tests done.
A: Gamma rays are used in many different ways; one of the most common uses is inspecting castings and welds for defects that are not visible to the naked eye. Another common use of gamma rays is in the treatment of certain types of cancer.
The radionuclides in the device always produce gamma rays. The only way to âturn offâ a gamma ray radiography device is to interrupt the beam by covering the opening with a heavy metal plate. Workers must be careful to close the opening when the gamma device is not in use to avoid exposure.