Angina may feel like pressure or squeezing in your chest. The pain also can occur in your shoulders, arms, neck, jaw, or back. Angina pain may even feel like indigestion. Angina isn't a disease; it's a symptom of an underlying heart problem.
Uses of X-rays. The main use of X-rays is in medicine. A comman application is in the form of X-ray machines, which take photos of a patientâs body. If an arm or leg were broken for example, then this limb would be put in front of the X-ray with a piece of photographic film behind.
X-Rays vs Gamma Rays. Electromagnetic spectrum is a very useful concept used in the study of physics. X-rays are a type of electromagnetic rays, which are used for medical purposes, and gamma rays are widely used in observational astronomy. Both of these electromagnetic rays are high-energy electromagnetic rays.