J.M. Gabrielse. Outline Reflection Mirrors Plane mirrors Spherical mirrors Concave mirrors Convex mirrors Refraction Lenses Concave lenses Convex lenses

Download J.M. Gabrielse. Outline Reflection Mirrors Plane mirrors Spherical mirrors Concave mirrors Convex mirrors Refraction Lenses Concave lenses Convex lenses

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<ul><li> Slide 1 </li> <li> J.M. Gabrielse </li> <li> Slide 2 </li> <li> Outline Reflection Mirrors Plane mirrors Spherical mirrors Concave mirrors Convex mirrors Refraction Lenses Concave lenses Convex lenses </li> <li> Slide 3 </li> <li> J.M. Gabrielse A ray of light is an extremely narrow beam of light. </li> <li> Slide 4 </li> <li> J.M. Gabrielse All visible objects emit or reflect light rays in all directions. </li> <li> Slide 5 </li> <li> J.M. Gabrielse Our eyes detect light rays. </li> <li> Slide 6 </li> <li> J.M. Gabrielse We see images when light rays converge in our eyes. converge: come together </li> <li> Slide 7 </li> <li> J.M. Gabrielse Mirrors object image It is possible to see images in mirrors. </li> <li> Slide 8 </li> <li> J.M. Gabrielse </li> <li> Slide 9 </li> <li> Mirrors reflect light rays. </li> <li> Slide 10 </li> <li> J.M. Gabrielse Plane Mirrors (flat mirrors) How do we see images in mirrors? </li> <li> Slide 11 </li> <li> J.M. Gabrielse Plane Mirrors (flat mirrors) objectimage Light reflected off the mirror converges to form an image in the eye. How do we see images in mirrors? </li> <li> Slide 12 </li> <li> J.M. Gabrielse Plane Mirrors (flat mirrors) objectimage Light reflected off the mirror converges to form an image in the eye. The eye perceives light rays as if they came through the mirror. Imaginary light rays extended behind mirrors are called sight lines. How do we see images in mirrors? </li> <li> Slide 13 </li> <li> J.M. Gabrielse Plane Mirrors (flat mirrors) objec t imag e Light reflected off the mirror converges to form an image in the eye. The eye perceives light rays as if they came through the mirror. Imaginary light rays extended behind mirrors are called sight lines. The image is virtual since it is formed by imaginary sight lines, not real light rays. How do we see images in mirrors? </li> <li> Slide 14 </li> <li> J.M. Gabrielse Spherical Mirrors (concave &amp; convex) </li> <li> Slide 15 </li> <li> J.M. Gabrielse </li> <li> Slide 16 </li> <li> Slide 17 </li> <li> Slide 18 </li> <li> Slide 19 </li> <li> Slide 20 </li> <li> Slide 21 </li> <li> Slide 22 </li> <li> Slide 23 </li> <li> Slide 24 </li> <li> Slide 25 </li> <li> Slide 26 </li> <li> Slide 27 </li> <li> Slide 28 </li> <li> Slide 29 </li> <li> Slide 30 </li> <li> Slide 31 </li> <li> Slide 32 </li> <li> Slide 33 </li> <li> Slide 34 </li> <li> Slide 35 </li> <li> Slide 36 </li> <li> Lensmakers Equation = focal length d o = object distance d i = image distance if distance is negative the image is behind the mirror </li> <li> Slide 37 </li> <li> J.M. Gabrielse Magnification Equation m = magnification h i = image height h o = object height If height is negative the image is upside down if the magnification is negative the image is inverted (upside down) </li> <li> Slide 38 </li> <li> J.M. Gabrielse </li> <li> Slide 39 </li> <li> Lenses The first telescope, designed and built by Galileo, used lenses to focus light from faraway objects, into Galileos eye. His telescope consisted of a concave lens and a convex lens. Light rays are always refracted (bent) towards the thickest part of the lens. convex lens concave lens light from object </li> <li> Slide 40 </li> <li> J.M. Gabrielse </li> <li> Slide 41 </li> <li> Slide 42 </li> <li> Slide 43 </li> <li> Slide 44 </li> <li> Slide 45 </li> <li> Slide 46 </li> <li> Slide 47 </li> <li> Slide 48 </li> <li> Slide 49 </li> <li> Convex Lenses Convex lenses are thicker in the middle and focus light rays to a focal point in front of the lens. The focal length of the lens is the distance between the center of the lens and the point where the light rays are focused. </li> <li> Slide 50 </li> <li> J.M. Gabrielse </li> <li> Slide 51 </li> <li> Slide 52 </li> <li> Slide 53 </li> <li> Slide 54 </li> <li> Slide 55 </li> <li> Slide 56 </li> <li> Slide 57 </li> </ul>