Introduction•X-rays discovered by William Rontgen in 1895•Tube emitting photons caused a fluorescent screen to glow, (even when tube placed inside a box!)•Tube emitting new type of radiation, called X-rays (mysterious nature)•Different media had different attenuation and it could be captured on film•First X-ray picture of his wife’s hand (December 1895)
What are X-Rays?X-ray photons have high energies and short wavelengths. ( E = hf)Wavelength:10-10 m (Angstrom), Energy: KeV (eV: 1.6x10-19 J)EM Spectrum
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