Abbreviations and symbols used in text

  • α alpha (radiation)
  • β beta (radiation)
  • γ gamma (radiation); gamma (contrast)
  • λ lambda (wavelength)
  • μ mu; (micro-)
  • μA microamp
  • μm micrometre (micron)
  • μrad microradians
  • μW microwatt
  • τ theta (semi-field angle; diffraction angle)
  • 3D, 3-D three dimensions
  • 3-DTVthree-dimensional television
  • Å Angstrom unit
  • A4 document size
  • A/D analogue to digital
  • AC alternating current
  • ADC analogue to digital converter
  • AEC automatic exposure control
  • AES automatic electronic shutter
  • AFS aerial film speed
  • AgX silver halide
  • AGC automatic gain control
  • AHU anti-halation undercoat
  • A1 aluminium
  • AL attenuation length
  • ALARA as low as reasonably attainable
  • ALC automatic level control
  • ANSI American National Standards Institute
  • AO acousto-optic ...

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