Question

CONSTRUCTION AND USE OF BINOCULER

Answer 1

Construction:

Binoculars or field glasses are two telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes when viewing distant objects. Most are sized to be held using both hands, although sizes vary widely from opera glasses to large pedestal mounted military models.

Uses:

Hand-held binoculars range from small 3 × 10 Galilean opera glasses, used in theaters, to glasses with 7 to 12 times magnification and 30 to 50 mm diameter objectives for typical outdoor use.

Many tourist attractions have installed pedestrial-mounted, coin-operation binoculars to allow visitors to obtain a closer view of the attraction.

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