Sometimes, dyspepsia is a more sudden, noticeable (acute) sensation. Depending on the cause of the dyspepsia, people may have other symptoms such as a poor appetite, nausea, constipation, diarrhea, flatulence, and belching. For some people, eating makes symptoms worse. For others, eating relieves symptoms.
An X-ray machine is essentially a camera. Instead of visible light, however, it uses X-rays to expose the film. X-rays are like light in that they are electromagnetic waves, but they are more energetic so they can penetrate many materials to varying degrees.
What Are X-Rays? And How Does Radiography Work? X-rays (often written x-rays or xrays) are a type of electromagnetic (EM) radiation. The term X-ray is shorthand for X-radiation, so named simply because it was an unknown form of radiation when discovered.