Electromagnetic Spectrum XRays Presentation By Aaron Burger Allison

Electromagnetic Spectrum – X-Rays Presentation By: Aaron Burger Allison Frank Jonathan Goulet

The Electromagnetic Spectrum X – Rays: Wavelength = 0. 1 Ǻ to 100 Ǻ (1 Ǻ = 10 -10 m) Frequency = 3 × 1016 Hz to 3 × 1019 Hz

Mathematical Relationship n All electromagnetic waves follow this relationship between wavelength and frequency C=λxf Speed of Light Wavelength Frequency

Uses of X-Rays Used in hospitals and by physicians to image bones or teeth of patients and to find foreign objects or cancers n Used in security checkpoints at airports and other places n Also used by astronomers to study distant galaxies and the expansion of the universe n

Dangers of X-Rays and other radiation have been linked to increased likelihood of cancer n There also dangers associated with xray exposure for babies and women who are pregnant n

History of X-Rays Discovered accidentally in 1896 by German Physicist Wilhelm Roentgen, for which he won 1901 Nobel Prize in Physics n Used for many other discoveries in physics, chemistry, and medicine since, including many Nobel Prize winners n Several different elements were discovered using X-Rays n

Sources 1. http: //nobelprize. org/educational_games/physics/x-rays/ 2. http: //encarta. msn. com/encyclopedia_761579196/X_Ray. html 3. http: //www. nytimes. com/1989/11/09/us/health-radiationsafety-childhood-x-rays-linked-to-breast-cancerrisk. html? scp=32&sq=x-rays&st=cse 4. http: //www. nytimes. com/1990/01/13/us/astronomers-sayx-ray-glow-is-produced-in-activegalaxies. html? scp=55&sq=x-rays&st=cse 5. http: //www. radiologyinfo. org/en/info. cfm? PG=chestrad