how do prisms,teslescope,binoculars work?

Answer 1

Prisms, lenses and refracting telescopes, (telescopes that use only lenses) and binoculars work by bending the light.

When the light hits the surfadce of the glass, part of the wave slows down as it enters into the glass due to the interaction with the glass molecules, while part of it which has yet to enter the glass keeps on traveling at the speed it was. This difference in speeds causes the light wave to "turn". Differen't wavelengths bend different amounts. Blue will bend the most and red the least. This is how a prism seperates white light into different colors.

A lens works the same way but is cut in such a way that the light focuses at a particular point. A problem with this is that because all the wavelengths bend to different degrees, not all of them will focus perfectly at the same point. This is called chromatic abberation and is only noticable under high magnifications...it can be corrected using coatings and special systems of many lenses.

The best way to understand how lenses magnify is to look at a diagram (and try to draw some yourself). You can read more about that here. http://www.glenbrook.k12.il.us/gbssci/phys/Class/refrn/u14l5da.html

Telescopes and binoculars generally consist of a primary lens/mirror and eyepiece and prism.

Typically the primary lens or mirror collects light over a fairly large area and focuses it to an itty bitty point. An eypeice then magnifies this point. The goal is to collect a lot of light, and then look really closely at it!

Answer 2

Optics - microscopes and telescopes all invert the image because if they didnt, it would
mean that another lens had to be added, increasing money cost. A lens is convex on both
sides. That means the middle is thicker than the edges. A microscope or telescope has two
lenses (basically).
The objective lens (usually larger and closer to the specimen or object) which allows the
image of the object to be reduced to a smaller workable image inside the scope.
This image is inverted inside the scope. It is also too small to see with the eye, so you
need another lens, the eyepiece. The eyepiece focus's your eye on the image and magnifies
it so you can see it. Every lens has a focal length, the point at which the image is formed
away from the surface of the lens.

Answer 3

These devices work essentially by slowing light down. The speed of light in a vacuum is a constant, but it is slower when traveling through matter, such as glass or air or any transparent substance. Light will always take the quickest path through anything, however, even if bending it's path is required to do so. So the optician skillfully designs glass shapes to take advantage of this property of light, thus allowing the essentially parallel rays of the sun to be brought to a common focus, for instance. This is very useful in many applications, such as frying unsuspecting ants or magnifying images, etc. Red light is bent less than blue, allowing a prism to create ia rainbow of colors.

Answer 4

Maybe you've been out looking at the stars in the night sky, searching for constellations; or maybe you've already learned your way around the constellations, and now you'd like to take a closer look -- at objects like the moon, planets or stars -- with the aid of a telescope.

A telescope is a device used to magnify distant objects. There are many types to choose from, and many price ranges to consider. How do you know which one is best for you? How can you be sure that you won't be disappointed when you take your new telescope out to see the stars?

http://www.howstuffworks.com/index.htm

I’ll leave you to find the others, OK.

Answer 5

they work by the ways of motion of light & its properties (reflection, refracton, interference & diffraction of light)

with the help of Google or Yahoo search u can find anything u want about these 4 ways

i hope u got ur point from my explanation

Answer 6

look, i dont know the answer, but go to www.howstuffworks.com, it will answer anything u want, it s a great site