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.
How X-rays work. An X-ray is a form of electromagnetic radiation that, when passed through an object, creates shadows of the structures within that object. X-rays pass through light molecular weight atoms like hydrogen, carbon, nitrogen and oxygen. These atoms make up skin, muscles and other soft tissues.