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.
Gamma rays are able to ionize other atoms (ionizing radiation), and are thus biologically hazardous. The decay of an atomic nucleus from a high energy state to a lower energy state, a process called gamma decay, produces gamma radiation. Natural sources of gamma rays on Earth are observed in the gamma decay of radionuclides and secondary radiation from atmospheric interactions with cosmic ray particles.