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X-Rays Explained in Seconds! Fundamental facts about X-rays: • Named X-rays because they were unknown rays when Roentgen discovered them in 1895 • Travel at the speed of light (3×10⁸ m/s) • Have short wavelength and high energy • No charge & no mass • 99% heat, 1% X-rays (low efficiency) • Not deflected by electric or magnetic fields • Higher kVp = higher penetration • Produced by Bremsstrahlung & Characteristic radiation • Ionizing radiation that causes fluorescence and forms latent image • Tra