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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