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.
Since gamma rays are at the top of the electromagnetic spectrum in terms of energy, all extremely high energy photons are gamma rays; for example, a photon having the Planck energy would be a gamma ray. Gamma rays from sources other than radioactive decay