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Transcript of Telescopes
37&ndsp=21&tx=157&ty=101 Snell's Law The law states that the ratio of the angles is equal to the ratio of the velocities of the mediums. n is another was to show the opposites of refraction. "The Great Refractor" in Cambridge uses an achromatic lens to display images rather than mirrors. http://www.cfa.harvard.edu/hco/grref.html Law of Reflection It allows people to predict where light will be reflected. The angle of incident is the angle coming in to the reflection. The mirror becomes the normal and the ray of reflection creates the angle or reflection as well. When light hits a medium and is diffused. http://en.wikipedia.org/wiki/Compton_Gamma_Ray_Observatory The Compton Telescope uses the concept of scattering. Flat mirrors use the Law of Reflection to reflect images from a telescope. Parkes radio telescope near Sidney, Australia. http://en.wikipedia.org/wiki/File:Parkes.arp.750pix.jpg South Pole telescope: Microwave radiation. The prism sheet uses combination of white light to create a rainbow of colors. The wave tank shows how waves look and travel. The wave tank shows how the waves move through the object. The blocks transmitted the lazer onto the wall. commons.wikimedia.org The Multiple Mirror Telescope uses flat mirrors to reflect images. mmto.org jwilson.coe.uga.edu www.science20.com Concave mirrors are used to focus light to one focal point inside the telescope. The Gregorian Telescope uses a concave mirror to focus light. http://en.wikipedia.org/wiki/File:Gregorian_telescope_circa_1735_in_Putnam_Gallery_2,_2009-11-24.jpg Concave mirrors reflect light to form images. The convertible Newtonian/Cassegrain reflecting telescope uses convex mirrors. http://en.wikipedia.org/wiki/Reflecting_telescope http://en.wikipedia.org/wiki/Reflecting_telescope Concave lenses are used to bring more light into the telescope Hubble Space Telescope: Near IR technology http://www.nasa.gov/images/content/744235main_hubblefloating.jpg USA harlan j smith visible light telescope http://en.wikipedia.org/wiki/File:USA_harlan_j_smith_telescope_TX.jpg Swift Gamma Ray Burst Explorer: Various forms of light including UV http://ecuip.lib.uchicago.edu/multiwavelength-astronomy/images/gamma-ray/tools/main_swift-burst_m.jpg http://upload.wikimedia.org/wikipedia/commons/9/96/Chandra_X-ray_Observatory.jpg Chandra Observatory: Xray Fermi Gamma-ray Space Telescope http://fermi.sonoma.edu/multimedia/gallery/GLASTinSpaceWeb.jpg Focuses the light. Its the main use for optical telescopes. Refracting telescope from "Nice Observatory" That uses a convex lense to focus a large image to one point which the naked eye sees through http://en.wikipedia.org/wiki/File:Telescope.jpg When a wave encounters an obstacle, the pattern or "ripple" of the wave changes, depending on the obstacle shape/size. The mirrors reflect the lazer. The laser is being refracted through the medium. Flat mirrors were used to reflect the light. The lasers were used to show how a concave mirror works. Lasers were used to show how a convex mirror reflect light. The concave lens
scattered the light. The piece calcite scattered the laser. Newton's reflecting telescope uses reflection to create images. Herschel Space observatory: Far IR Technology http://en.wikipedia.org/wiki/Reflecting_telescope http://en.wikipedia.org/wiki/File:Herschel_Space_Observatory.jpg