Translations:Adventist Youth Honors Answer Book/Health and Science/Optics/67/en

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10. Explain what is meant by the term 6x35 and 7x50 as applied to binoculars.

A typical Porro prism binoculars design

The numbers used for describing binoculars give the power followed by the diameter of the objective lens (The largest diameter lens) in millimeters. This means that 6x35 have a magnifying power of 6x and have a diameter of 35mm.

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