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Two triangular prisms are used in the design of a periscope to reflect the incoming light rays at 90 degree angles. They are first reflected down periscope, then again towards the eye.
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Why do telescopes used for astronomy not have prisms to make the image the right way up?
Because it's not important. Introducing a prism into the optical path would absorb some of the light, which is important. So the tradeoff is an easy choice for astronomers to make.
Why do telescopes for astronomy not have prisms?
Some telescopes do. These are usually at the eyepiece end of a refractor telescope (i.e. one with the lens at the top and you look through the bottom end. The prism bends the light at right angles so you don't get a stiff neck. The prism makes viewing more comfortable. I use one on my telescope.
What and where are the largest optical telescopes in use today?
Ccd's and in large telescopes
What do astronomers use to look at planets?
Their eyes, ground-based telescopes, space telescopes.
Do telescopes use energy?
Yes. It takes energy to move them in the correct direction. In home telescopes, this is done by hand (energy from your muscles), in large telescopes they use some kind of motors to do that.
Does binocular use lens?
Yes, binoculars use similar lenses to telescopes but with a system of prisms to fold the light path to permit binoculars to be much shorter than a regular telescope.
Why do telescopes used for astronomy not have prisms to make the image the right way up?
Because it's not important. Introducing a prism into the optical path would absorb some of the light, which is important. So the tradeoff is an easy choice for astronomers to make.
What these are used for binoculars?
Binoculars are distinguished from telescopes through the use of "folded optics". That is, the light path is folded into the body, allowing a compact design. Rather than mirrors, prisms are used to reflect the light.
Why do telescopes for astronomy not have prisms?
Some telescopes do. These are usually at the eyepiece end of a refractor telescope (i.e. one with the lens at the top and you look through the bottom end. The prism bends the light at right angles so you don't get a stiff neck. The prism makes viewing more comfortable. I use one on my telescope.
What other kinds of radiation are detected by telescopes?
Researchers use all of these: -- optical telescopes -- radio telescopes -- x-ray telescopes -- infra-red telescopes -- ultraviolet telescopes
Do astronomers or nasa use refracting telescopes?
Yes, both of them. And they also use reflecting telescopes.
What and where are the largest optical telescopes in use today?
Ccd's and in large telescopes
What are the largest telescopes used for observations in the visible region of the spectrum?
The largest telescopes that use visible light are reflector telescopes.
What tool do astronomers use to study space?
they use space probes,satellites,and of coarse,telescopes.
What are the largest telescopes used for observations in the visible region of the spectrum called?
The largest telescopes that use visible light are reflector telescopes.
What are common examples of light bending?
Rainbows, a straw looking bent in a glass of water, microscopes, telescopes, prisms, a stone looking closer to the surface of water than it actually is, and eyeglasses.
What do astronomers use to look at planets?
Their eyes, ground-based telescopes, space telescopes.
