Refraction Reflection

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Refraction occurs when light passes from one medium to another, with medium being any type of region or material that allow waves to pass through it. When light refracts it is “bending” which means that when light waves go from one medium to another, it will change speed which means direction as well, however the change in direction is not refraction but more of an observable effect of it. The change of speed is affected by the optical density of the medium. Optical density is related to the slow tendency of atoms within a material and how they maintain absorbed energy from an electromagnetic wave in the form of vibrating electrons before putting it out as a different electromagnetic disturbance. The optical density is also known as the …show more content…

A refracting telescope works by bending light through lens so the image will appear clearer, brighter and more magnified than what the normal human eye can see. A refracting telescope has two lens, a large lense which is known as the objective lens, and the small lense which is called an eye piece, the eyepiece is used for viewing the magnified image. The refracting telescope is used by refraction/bending of light. When light rays enter a lens it will refract and the same ray will refract again when it leaves the lense.
Lens are typically made of plastic or glass and they create images through bending light waves (refraction). Lenses are ground which means that there surfaces are either segments of spheres or planes. There are two main types of lenses, the concave lense and the convex. The concave lense is thinner in the middle than on the outside so it curves in, because of this, it means that as light passes through a concave lense, the light will diverge, meaning it will spread apart as shown in the …show more content…

Telescopes use magnification to enlarge objects so the user can see them closer up. In refracting telescope, the amount an image can be magnified depends on the telescopes focal length from the objective lense to the focal point. When the focal length is larger, it generally means that the image will be more magnified, however, it does not mean that the image will be clearer. The power of magnification of a refracting telescope is the ratio of a and objects angular diameter to its naked eye diameter which depends on the focal length of both lenses. When calculating the magnification in a refracting telescope you must use the equation:Magnification=FO (focal length of objectives lens)FI(Focal length of eyepiece

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