X-Rays
Background of X - Rays
How are X - Rays Produced?
X-rays (shorthand for x-radiation) are a form of electromagnetic radiation, just like visible light. However where the wavelength of light is between 400nm – 700nm (around the size of a single celled organism), the wavelength of an x-ray is of size 0.01nm-10nm, much smaller than that of visible light (around the size of an atom). Due to their shorter wavelengths, x-rays carry much more energy than visible light and have enough energy to be termed ‘ionising’. [X1]
When the benefits of having an x-ray outweigh the risks of radiation, x-rays can be highly useful in medicine. X-ray scans allow images to be taken of internal organs and bones without invasive techniques. This prevents the risk of infection associated with surgery, and possible complications of surgery, not to mention recovery time for the patient. X-rays allow a diagnosis to be made so that a doctor can find the right course of action. [X2]
​
Watch the video below for a brief explanation to how x-rays are produced.
A Brief Explanation of Ionisation
Incoming x-ray photon has enough energy to knock electron from atom, leaving behind an ion.