Project:
Make a Power point presentation about the construction and use of binoculars.

Explanation

Binoculars are actually two telescopes connected side-by-side used to view from both the eyes. Depending on the optical devices used, binoculars are of different types: Galilean binoculars, Prism binoculars, Keplerian binoculars etc.
Construction: Basic parts of binoculars are optical devices, central focusing arrangement, hinge and axle system for adjustment of distance from the eyes. The optical devices used in the above mentioned binoculars are:
i. Galilean binoculars: These consist of a convex objective lens and a concave eyepiece.
ii. Prism binoculars: These consist of two right angled prisms and work on the principle of total internal reflection.
iii. Keplerian binoculars: These consist of convex lenses for both objective and eyepiece. Uses: Binoculars are used to view distant objects clearer and closer. Hence, few of their uses are:
i. In military operations to keep watch on the enemy.
ii. In sports to enjoy the play even from the far away distance.
iii. At tourists spots to observe the distant views of the valley.
iv. For bird watching.