Information for Physics 1201 Midterm 2 Wednesday, March 27

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Polaroid Sun Glasses Besides sunlight re-radiated from atmospheric molecules, there are other sources of horizontally polarized light that occur in nature, such as sunlight reflected from horizontal surfaces such as lakes. Polaroid sun glasses take advantage of this fact by using polarizers with their axes oriented vertically: è in addition to 1/2 of the unpolarized light which is already blocked by the polarizers, all of the horizontally polarized light is completely blocked, thus blocking out some of the reflected light which can confuse you during some outdoor activities (e.g. driving, piloting, fishing…….).
Polarization Another application using polarized glasses: watching 3-D movies. In a 3-D movie, two separate rolls of film are projected using a projector with two lenses, each with its own polarizer. The two polarizers are crossed. Viewers watch the action on-screen through glasses that have correspondingly crossed polarizers <strong>for</strong> each eye. IMAX movie projector Movie viewer using polarized glasses
Page 1: My lecture slides are posted at htt
Page 6 and 7: Example. Partially polarized and pa
Page 8 and 9: Polarization and the Reflection and
Page 10 and 11: Cameras IMAGE FORMATION BY A CONVER
Page 12 and 13: (c) f − stop = = 60 mm f Diameter
Page 14 and 15: The Human Eye OPTICS The lens only
Page 16 and 17: The Human Eye Example: Eyeglasses f
Page 18 and 19: The Human Eye FARSIGHTEDNESS The le
Page 20 and 21: do = 25.0 − 2.0 = 23.0 cm, di =
Page 22 and 23: Example: What refractive power, in
Page 24 and 25: Angular Magnification and the Magni
Page 26 and 27: Angular Magnification and the Magni

Information for Physics 1201 Midterm 2 Wednesday, March 27

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