Mathematics and Society - OS X Lion Server

(To project an image using a concave mirror theobject must be a distance from the mirror greaterthan the focal length. Images that can be projectedon a screen are called real images.I Placement of the object in the followingregions provides for the best student investigations.A) The object placed between the focalpoint F and the center ofcurvature C. The image willappear beyond C, inverted,be reversed right to leftand be real.CoC>~ IML\GETHE C(!JTER 01'" CURVATURE,C, IS TWICE AS PAR FROMTI-lE MIRROR AS THE mCAL:LE"lCTH, F.This is used in movie projectors.(B) The object placed at the center of curvature, C.The image will also appear at the center of curvature.reversed right to left, the same size and real.It will be inverted,REfli-CTINC TELESCOPEIMAGELIGHT FROMDISTANT STAR,OBJEC.T.C) The object placed beyond C. Theimage will appear between F and C, beinverted, smaller, reversed right to leftand real.reflecting telescope.This is the principle behind aThe largest reflectingtelescope in the U.S., having a diameter of 200 inches,is the Hale telescope on Mt. Palomar in California.IIImage distances can be calculated.located from the364 measurements... .­-:"(1'f ,,,,For any concave mirror the image distance, i, can becalculated if the focal length, f, and the objectdistance, 0, are known.III\:1 Using the formula - + - = - or the equivalent formula'~'o i f. o· f>11. = will determine the distance the image iso - fspherical mirror. Students can check their calculation by actual(