en

half aperture angle

1

Terminological databases

Metroloogia terminibaas

ID 1142940 Last modified 10.03.2026
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Domain Standardisation - Metrologymeasuring instruments
avapoolnurk
half aperture angle
α
  • pool nurkavast
  • one half of the angular aperture
avapoolnurk
Usage examples
  • Avapoolnurka nimetatakse mõnikord koonuse poolnurgaks.
α symbol
half aperture angle
Usage examples
  • Half aperture angle is sometimes called half cone ange.
α symbol

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