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Facts about photons

Facts about photons. Smallest quantity of electromagnetic radiation bundle of energy (AKA quantum) travels at 186,400 miles per second x-ray and visible light photons. energy disturbances no mass have electric and magnetic fields that move in sine waves . PHOTONS.

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Facts about photons

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  1. Facts about photons

  2. Smallest quantity of electromagnetic radiation bundle of energy (AKA quantum) travels at 186,400 miles per second x-ray and visible light photons energy disturbances no mass have electric and magnetic fields that move in sine waves PHOTONS

  3. ELECTROMAGNETIC RADIATION • James Clerk Maxwell discovered both light and x-rays have electric and magnetic properties

  4. TERMINOLOGY OF A SINE WAVE • AMPLITUDE: 1/2 RANGE FROM CREST TO VALLEY • FREQUENCY: RISE AND FALL OF SINE WAVE (HZ). • ONE HZ IS EQUAL TO ONE CYCLE PER SECOND • WAVELENGTH: DISTANCE FROM ONE VALLEY TO ANOTHER OR ONE CREST TO ANOTHER

  5. FACTS ABOUT “c”, “f” AND LAMBDA • C or V = velocity • C increases as F(FREQUENCY) increases • As LAMBDA (WAVELENGTH) increases, F decreases • V = F x Lambda • C = F X Lambda in electromagnetic radiation

  6. Hz Meter Volts Energy Frequency Wavelength Match the Units of measurement

  7. MISCELLENOUS FACTS • 80 kVp= energies from 0-80 keV • x-rays are emitted from electron cloud gamma rays emitted from nucleus

  8. Reflection Transmission Absorption Transparent Translucent Opaque Significant in Radiology Attenuation Radioopaque Radiolucent DEFINITIONS

  9. PLANCK’S QUANTUM THEORY • Understanding of relationship between energy and frequency • X-ray photons travel at speed of light and exist with velocity or do not exist at all • photon energy is proportional to photon frequency • Planck’s constant

  10. Application of Planck’s Constant E(eV)=h(Planck’s constant or constant of proportionality*)x f(photon frequency)

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