what is a telescope?

Answer 1

It's a device that helps you see far away objects - like stars - better.

Answer 2

The word "telescope" (from the Greek tele = 'far' and skopein = 'to look or see'; teleskopos = 'far-seeing') usually refers to optical telescopes, but there are telescopes for most of the spectrum of electromagnetic radiation and for other signal types.

An optical telescope is an optical tool that gathers and focuses electromagnetic radiation. Telescopes increase the apparent angular size of distant objects, as well as their apparent brightness. Telescopes work by employing one or more curved optical elements - lenses or mirrors - to gather light or other electromagnetic radiation and bring that light or radiation to a focus, where the image can be observed, photographed or studied.

Optical telescopes are used for astronomy and in many non-astronomical instruments including theodolites, transits, spotting scopes, monoculars, binoculars, camera lenses and spyglasses.

Single-dish Radio telescopes are focusing radio antennae often having a parabolic shape. The dishes are sometimes constructed of a conductive wire mesh whose openings are smaller than a wavelength. Multi-element Radio telescopes are constructed from pairs or larger groups of these dishes to synthesize large "virtual" apertures that are similar in size to the separation between the telescopes: see aperture synthesis. As of 2005, the current record array size is many times the width of the Earth, utilizing space-based Very Long Baseline Interferometry (VLBI) telescopes such as the Japanese HALCA (Highly Advanced Laboratory for Communications and Astronomy) VSOP (VLBI Space Observatory Program) satellite. Aperture synthesis is now also being applied to optical telescopes using optical interferometers (arrays of optical telescopes) and Aperture Masking Interferometry at single telescopes.

X-ray and gamma-ray telescopes have a problem because these rays go through most metals and glasses. They use ring-shaped "glancing" mirrors, made of heavy metals, that reflect the rays just a few degrees. The mirrors are usually a section of a rotated parabola. High energy particle telescopes detect a flux of particles, usually originating at an astronomical source.

Answer 3

A telescope is an instrument to collect light, used mainly for examining distant objects like planets and stars. There are many principles and designs involved but the purpose of a telescope is to collect light.

Answer 4

Hi. First question? A telescope is a device used to gather light, more than a human eye, and present it in a structured way such that a lens can be used to examine the image. The ratio between the focal length of the lens and the focal length of the primary determines magnification while the diameter of the primary determines brightness of the image.

Answer 5

E.E : we use that telescope for space exploration scientist of
today called Astronomy yes an tool very powerful looking
at our galaxy far away like Mars or Venus maybe pluto smallest
plannet closer to sun but we has another type to study that solar
Eclipse too discovery in fast galaxy 1000,000 light years away

Answer 6

A telescope is a device that lets you see faraway things like stars. Or even farther, the Moon. Does this solve your question?

Answer 7

used to see far off objects like planets and stars...

Answer 8

a thingy that helps u see far

Answer 9

You use them to look into space.