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  2. Ray (optics) - Wikipedia

    en.wikipedia.org/wiki/Ray_(optics)

    The principal ray or chief ray (sometimes known as the b ray) in an optical system is the meridional ray that starts at an edge of an object and passes through the center of the aperture stop. [ 5 ] [ 8 ] [ 7 ] The distance between the chief ray (or an extension of it for a virtual image) and the optical axis at an image location defines the ...

  3. Plane mirror - Wikipedia

    en.wikipedia.org/wiki/Plane_mirror

    A ray diagram for a plane mirror. The incident light rays from the object create an apparent mirror image for the observer. A plane mirror is made using some highly reflecting and polished surface such as a silver or aluminium surface in a process called silvering. [6] After silvering, a thin layer of red lead oxide is applied at the back of ...

  4. Spherical aberration - Wikipedia

    en.wikipedia.org/wiki/Spherical_aberration

    Many ways to estimate the diameter of the focused spot due to spherical aberration are based on ray optics. Ray optics, however, does not consider that light is an electromagnetic wave. Therefore, the results can be wrong due to interference effects arisen from the wave nature of light.

  5. Puzzle solutions for Saturday, Nov. 30, 2024

    www.aol.com/news/puzzle-solutions-saturday-nov...

    Note: Most subscribers have some, but not all, of the puzzles that correspond to the following set of solutions for their local newspaper. CROSSWORDS

  6. Geometrical optics - Wikipedia

    en.wikipedia.org/wiki/Geometrical_optics

    Geometrical optics, or ray optics, is a model of optics that describes light propagation in terms of rays. The ray in geometrical optics is an abstraction useful for approximating the paths along which light propagates under certain circumstances. The simplifying assumptions of geometrical optics include that light rays:

  7. Specular reflection - Wikipedia

    en.wikipedia.org/wiki/Specular_reflection

    A ray of light is characterized by the direction normal to the wave front (wave normal). When a ray encounters a surface, the angle that the wave normal makes with respect to the surface normal is called the angle of incidence and the plane defined by both directions is the plane of incidence. Reflection of the incident ray also occurs in the ...

  8. Rayleigh distance - Wikipedia

    en.wikipedia.org/wiki/Rayleigh_distance

    Rayleigh distance in optics is the axial distance from a radiating aperture to a point at which the path difference between the axial ray and an edge ray is λ / 4. An approximation of the Rayleigh Distance is Z = D 2 2 λ {\displaystyle Z={\frac {D^{2}}{2\lambda }}} , in which Z is the Rayleigh distance, D is the aperture of radiation, λ the ...

  9. Today's Wordle Hint, Answer for #1262 on Monday ... - AOL

    www.aol.com/todays-wordle-hint-answer-1262...

    December 2, 2024 at 12:04 AM If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1262 ahead. Let's start with a few hints.