2007-09-22 00:25:32 · 7 answers · asked by ry 1 in Science & Mathematics ➔ Physics
mirrors and light- just like your eyeball! the image comes in upside down and the mirrors flip it right side up. that's why they're so heavy, all the mirror and glass =)
2007-09-22 00:31:25 · answer #1 · answered by Sarah 3 · 1⤊ 0⤋
The speed of light changes from medium to medium. Thus it can be that light travels more slowly in glass than in air. When the light from the object strikes the curved surface it is refracted (corrected physics term diffracted) so that it travels at a slightly different angle (look up snell's law (physics)) (the ratio between the speed of light in a vacuum and that for it in a medium is known as the refractive index of the medium). Due to the curvature of the lens the light will rays be brought closer together (converged, a positive lens) or spread apart (diverged, both positive and negative lenses depending on the distance of the object from the lens). If the object is beyond one focal length from a posive (magnifying) lens then a real image will be formed. The simple answer, after this long winded account - is a lens refracts light by slowing it down slightly and thus changes its direction of travel. Try looking up lens, refraction, diffraction and virtual and real images using your internet search engine.
2007-09-22 07:47:29 · answer #2 · answered by . 6 · 0⤊ 0⤋
light travels in the interstice of the atomic Crystal stucture which deflect the light flux.
A lensing effect is caused by the shape of the lens ,when light flux enters and exits the Crystal structure of the lens,thus projecting an image on a screen.
If a light flux in Space moves in the vicinity of a very dense mass have a strong gravity or electrostatic field ,it will be deflected by that field,hence creating a lensing effect. This can only occur if a photon ray posesses mass which would give it a permitivity to gravitationally enteract with complex masses structures.
2007-09-22 08:03:00 · answer #3 · answered by goring 6 · 0⤊ 0⤋
The speed of light(i.e wavelength of every colour is different in even in same media) changes from medium to medium(the media that allow light to pass though it). Thus it can be that light travels more slowly in glass than in air. When the light from the object(an emitter or reflector of light) strikes the curved surface it is refracted (the path of the refracted light if governed by the laws of refraction) so that it travels a shorter distance in which its speed is slower.the ratio between the speed of light in a vacuum and that for it in a medium is known as the refractive index of the medium.it tells us how many times does the speed of light decrease in that medium as compared to vaccum.
a lens is a transparent medium which has either one side or both side curved(forming a part of a sphere or a parabola). there are many types of lenses according to the image to be obtained.combinations are made such as both side curved innwards, or both side outwards etc.
the image formed greatly depends upon the type of lens(whether converges or diverges the rays of light) used and the distance of the object from the lens(the nature of rays falling on the lens surface)
2007-09-22 08:45:32 · answer #4 · answered by cool_bandhul 1 · 0⤊ 0⤋
The lens don't form an image. They either reflect one or allow the image to pass through.
2007-09-22 07:30:27 · answer #5 · answered by Voldemort 2 · 0⤊ 0⤋
The light comes into the eye upside down and is sorted by the brain back to how we see it,
2007-09-22 07:33:22 · answer #6 · answered by Anonymous · 0⤊ 0⤋
by focusing rays of light from the object
2007-09-22 07:30:05 · answer #7 · answered by Sylvia 2 · 0⤊ 0⤋