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GEOMETRICAL OPTICS

GEOMETRICAL OPTICS. Laws of Reflection. Curved mirrors. TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: A A A A A A. Reflection from a surface. Incident ray and the reflected one is in one plane The angle of reflection equals angle of incidence.

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GEOMETRICAL OPTICS

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  1. GEOMETRICAL OPTICS Laws of Reflection Curved mirrors TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: AAAAAA

  2. Reflection from a surface Incident ray and the reflected one is in one plane The angle of reflection equals angle of incidence Photograph of Mount Moran in the Grand Teton National Park in Wyoming - taken by Becky Henderson

  3. Can you explain this picture?

  4. 2dq Rdq Rdqcosq R FIND THE FOCAL DISTANCE OF A SPHERICAL MIRROR 1) Case of the “cup” q Angle of incidence = angle of reflection

  5. R = 2 cos q FIND THE FOCAL DISTANCE OF A SPHERICAL MIRROR 2) Other dimension (sphere) A O A 2q q O D B AB = AD/sin2q = R sinq/ sin2q Reflected ray in the plane of incidence

  6. Parabola: curve at equal distance from a point (F) and line y = ax2 F B A O x d E D

  7. Parabolic mirror: why do all rays perpendicular to the directrix converge at the focus F? F y=2ax A x x O 2 C d D E

  8. Off-axis parabolic mirror F

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