Question

tell me something about telescopes?.

Answer 1

or we can say that when any object is so far and your eyse is not able to see that object clearly

we can use the telescope name instruement which can help to see diatance object bez it accors high leses ...

an optical instrument designed to make distant objects appear nearer, containing an arrangement of lenses, or of ciurved mirrors and lenses, by which rays of light are collected and focused and the resulting image magnified.

There are two basic types of telescopes, refractors and reflectors



hope u like it

Answer 2

when any object is very from the eye, the angle it subtends at the eye is very small and so appears to be small. to make the object appear nearer to the eye, the angle subtends at the eye should be increased. to make the distant object nearer, the optical instrument used is called telescope.
there are two type of telescopes
☆the astronomical telescope are used to observe celestial bodies.
☆the terrestrial telescopes are used to observe distant object on the earth.

The three primary varieties of telescopes use lenses, mirrors, or a mixture of each.

Refracting telescopes use lenses combining as a minimum two, and as many as four, pieces of glass's as their purpose (the principal light-gathering gadget).

Reflecting telescopes use mirrors to acquire and focal point mild. In a Newtonian reflector's probably the most fashioned variety gentle reflects from the principal reflect (whose surface is floor right into a parabola so light involves a fashioned center of attention). The light strikes a smaller, flat secondary reflect near the top of the tube. The sunshine then is bent 90° and enters the eyepiece through a small hole within the tube.

Catadioptric, or compound, telescopes include a major reflect coupled with a corrector lens positioned at the entrance of the tube. The most important mirror's curve is floor to a easy shape, most commonly a sphere. Most often, a spherical mirror would introduce aberrations in the considered image, but the corrector of a catadioptric scope pre-bends the light earlier than it strikes the reflect.

hope it helped u