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 also aid in the treatment of medical patients who have cancer. They can kill the bad cells so that they cannot continue to divide and spread. X-rays can also be used to kill bacteria that causes food to spoil. This is what was used to preserve the food that the astronauts ate while on the moon and in space.