ThinLense3

ThinLense3 - Find image with a thin lens h o d o F F di...

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1 Find image with a thin lens Object h o d o h i d i F F f Object h o d o h i d i
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2 Analytical calculations Thin lens equation. f d d o i 1 1 1 = + o i o i d d h h m - = : ion magnificat h o h i
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3 Analytical calculations Lens maker’s equation: The formula for a lens in vacuum (air): - - = 2 1 1 1 1 1 R R ) n ( f n : index of refraction of the lens material. R 1 : radius of near surface. R 2 : radius of far surface. The near or far surface is with respect to the focal point F . Near side is surface 1, far side is surface 2. The sign of the radius is then defined as + ” if the center is on the far side; “ - ” if the center is on the near side. In this convention, positive f means converging lens, negative f means diverging lens. F near surface far surface
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4 Analytical calculations Lens maker’s equation: The formula for a lens ( n lens ) in medium n medium : - - = 2 1 1 1 1 1 R R ) n n ( f medium lens R 1 : radius of near surface. R 2 : radius of far surface. F near surface far surface n mediu m
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5 Sign convention table
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6 Angular size The height of an object is measured by a meter stick. The height of the same object we see through our eyes depends on the how far away the object is to our eyes.
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7 Angular size Angular size is defined to be: d h θ
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This note was uploaded on 05/06/2008 for the course PHYS 1304 taught by Professor Ye during the Spring '08 term at SMU.

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ThinLense3 - Find image with a thin lens h o d o F F di...

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