Birkenes, Robert. "Pay-view-scope looking out over the Niagara Falls.“ Flickr. Yahoo!, 24 July Web. 8 Feb "From My Blog - Cloning A Form." LittleBeeps.com. LittleBeeps, Web. 8 Feb "Contact Lenses at Plymouth Vision Center." Plymouth Vision Center. N.p., Web. 8 Feb Peters, Mark. "Olympus camera lenses unveiled." Lets Go Digital. N.p., 9 Nov Web. 8 Feb "Vintage eyeglasses spectacles from Germany by RetroEyewear on Etsy.“ StyleHive. Stylehive, Inc., Web. 8 Feb

 convex lens  concave lens  flat lens

 light rays are refracted when they hit the lens  converge: meet in the center “Convex Lens.” Diracdelta. Microsoft, Web 31 Jan

 lens/ mirror equation:  magnification equation: 1/f= 1/d i + 1/d o m= h i /h o = -d i /d o

 A larger lens lets in more light so the image is brighter  A smaller lens lets in less light therefore it creates a dimmer image Brown, Margaret. "AF-S Nikkor 400mm f/2.8G ED VR Lens." Photo Review. Media Publishing Pty Limited, Dec Web. 8 Feb Johnston, Mike. "TOP's Most Popular Small Camera(s)." The Online Photographer. N.p., 12 Oct Web. 8 Feb

 rays diverge when refracted  the rays are refracted as if they came from the focal point “Convex & Concave Lens.” Pass My Exams. N.p., Web. 31 Jan

 the image appears on the same side of the lens as the object and it appears larger

 formed by a convex lens if the object is closer than the focal point  formed by a concave lens at all times

 ome.jsf?view=3156&t=1 ome.jsf?view=3156&t=1

 Causes fringes of color around the image  Use both a convex and concave les (an achromatic lens) or a convex and flat (an achromatic doublet) Mallik, U., and Lifiana Somantri. "Lenses." Many Faces of Light: As Newton Saw it, with Some Magic Tricks. N.p., n.d. Web. 4 Feb

 Occurs when the surface is spherical  Blurs the image  Use only the center of lenses, or multiple lenses Mallik, U., and Lifiana Somantri. "Lenses." Many Faces of Light: As Newton Saw it, with Some Magic Tricks. N.p., n.d. Web. 4 Feb

 Zitzewitz, Paul W. Physics Principles and Problems ed. New York: Glencoe, Print.  "Vintage eyeglasses spectacles from Germany by RetroEyewear on Etsy." StyleHive. Stylehive, Inc., Web. 8 Feb  Brown, Margaret. "AF-S Nikkor 400mm f/2.8G ED VR Lens." Photo Review. Media Publishing Pty Limited, Dec Web. 8 Feb  Johnston, Mike. "TOP's Most Popular Small Camera(s)." The Online Photographer. N.p., 12 Oct Web. 8 Feb  “Convex Lens.” Diracdelta. Microsoft, Web 31 Jan  “Convex & Concave Lens.” Pass My Exams. N.p., Web. 31 Jan  Owens, Derek. "Concave and Convex Lenses." Attanolearn. N.p., Web. 31 Jan  Peters, Mark. "Olympus camera lenses unveiled." Lets Go Digital. N.p., 9 Nov Web. 8 Feb  Mallik, U., and Lifiana Somantri. "Lenses." Many Faces of Light: As Newton Saw it, with Some Magic Tricks. N.p., n.d. Web. 4 Feb  Birkenes, Robert. "Pay-view-scope looking out over the Niagara Falls.“ Flickr. Yahoo!, 24 July Web. 8 Feb  "From My Blog - Cloning A Form.“ LittleBeeps.com. LittleBeeps, Web. 8 Feb  "Contact Lenses at Plymouth Vision Center." Plymouth Vision Center. N.p., Web. 8 Feb

 f- focal point  d o - distance from lens to object  d i - distance from lens to image  M- magnification  h i - height of the image  h o - height of the object

 lens/ mirror equation  magnification equation Henderson, Tom. "Image Formation by Lenses." The Physics Classroom. Glenbrook South High School, Web. 21 Oct. 2010

 Henderson, Tom. "Image Formation by Lenses." The Physics Classroom. Glenbrook South High School, Web. 21 Oct  Zitzewitz, Paul W. Physics Principles and Problems ed. New York: Glencoe, Print.  Mallik, U., and Lifiana Somantri. "Lenses." Many Faces of Light: As Newton Saw it, with Some Magic Tricks. N.p., n.d. Web. 4 Feb

 forms the image in the retina but most of the refraction occurs at the cornea  the shape of the cornea can be changed by muscles: when the muscles are relaxed distant objects are in focus, when they are tightened closer objects are focused Emerald Coast Eye Institute. "An Illustrated Guide to the Human Eye." Emerald Coast Eye Institute. N.p., Web. 31 Jan

 when muscles cannot contract of relax enough to focus all objects glasses or contacts assist the retina by increasing or decreasing the focal length "Contact Lens." Chemistry Daily. N.p., Web. 31 Jan "Glasses/ Spectecles." FreeFoto.com. N.p., Web. 31 Jan

 e-channel/14379-how-its-made-contact- lenses-video.htm e-channel/14379-how-its-made-contact- lenses-video.htm

 microscopes allow the human eye to see extremely small objects by using at least 2 convex lenses, the image created is both magnified and virtual “1200CM-Series." Vee Gee Scientific. Vee Gee Scientific, Web. 31 Jan “1200ECM-Series.” Vee Gee Scientific. Vee Gee Scientific, Web. 31 Jan

 telescopes also use 2 convex lenses which creates an enlarge, virtual, and inverted image Telescope Finder. "Telescopes Store." Refracting Telescopes. N.p., Web. 31 Jan Klotz, Irene. "World's Largest Telescope Acts like a Big Bucket." Discovery News. Discovery Communications, 23 July Web. 31 Jan

 cameras contain several lenses and additional lenses can be added to focus or filter the image "Objectified." Design in Society. N.p., Web. 13 Mar. 2011

"Understanding Camera Lenses." Cambridge in Colour. N.p., Web. 8 Feb

 lenses made for phone cameras in all different effects: sepia tones, wide angle, starburst, color filters, etc. "Jelly Lens – Mobile Phone Mini Camera Lenses." First to Flyy. Blogger, 18 Aug Web. 8 Feb

 Through the years not much about lenses has changed. The only real advancement made is the development of lenses with a number of different focal lengths. The Diagnostics and Control Research Centre is working on changing that…

 Lenses with a focal length that can be altered by electric signal.  Model Model  Animation Animation  Not only could these be used for people suffering from severe vision problems but also in aroespace, communications, and military applications.

 Zitzewitz, Paul W. Physics Principles and Problems ed. New York: Glencoe, Print.  "Jelly Lens – Mobile Phone Mini Camera Lenses." First to Flyy. Blogger, 18 Aug Web. 8 Feb  Emerald Coast Eye Institute. "An Illustrated Guide to the Human Eye." Emerald Coast Eye Institute. N.p., Web. 31 Jan  "Contact Lens." Chemistry Daily. N.p., Web. 31 Jan  "Glasses/ Spectecles." FreeFoto.com. N.p., Web. 31 Jan  Klotz, Irene. "World's Largest Telescope Acts like a Big Bucket." Discovery News. Discovery Communications, 23 July Web. 31 Jan  "VanGuard." Vee Gee Scientific. Vee Gee Scientific, Web. 31 Jan  "How It's Made: Contact Lenses." HowStuffWorks Videos. HowStuffWorks, Inc., Web. 4 Feb  "Smart Materials (Lenses)." E.R.I.- Engineering Research Institute. Diagnostics Control and Research Centre, Web. 4 Feb