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a b tan ~ etc. so = h / s, = h / s’, = h / R Snell’s Law: n a sin a = n b sin b n a a = n b b b = ( ) n a / n b n a + n b n b n a n a /s + n b /s’ = ( n b - n a ) / R Fig. 35-20 (Continued) Refraction at a spherical surface – position of image. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics
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Fig. 35-21 Refraction at a spherical surface – height of image. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics
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Fig. 35-22 A glass rod in air forms a real image inside the rod. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics
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Fig. 35-25 First and second focal points of a converging thin lens. The numerical value of f is positive. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics
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Fig. 35-26 Construction used to find the image position for a thin lens. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics
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Fig. 35-28 First and second focal points of a diverging thin lens. The numerical value of f is negative. © 2003 J. F. Becker San Jose State University Physics 52 Heat and Optics
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