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  2. Shrink ray - Wikipedia

    en.wikipedia.org/wiki/Shrink_ray

    The shrink ray turns out to be faulty, however, as shrunken items return to normal size after a period of time. A shrink ray is a recurring device shown in Venture Brothers, although it never seems to actually work properly. In Despicable Me, Gru used a shrink ray to shrink the Moon and pocket it. The effects of the shrink ray are only ...

  3. Reflection (physics) - Wikipedia

    en.wikipedia.org/wiki/Reflection_(physics)

    The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane. The angle which the incident ray makes with the normal is equal to the angle which the reflected ray makes to the same normal. The reflected ray and the incident ray are on the opposite sides of the normal.

  4. Diffuse reflection - Wikipedia

    en.wikipedia.org/wiki/Diffuse_reflection

    Diffuse reflection is the reflection of light or other waves or particles from a surface such that a ray incident on the surface is scattered at many angles rather than at just one angle as in the case of specular reflection. An ideal diffuse reflecting surface is said to exhibit Lambertian reflection, meaning that there is equal luminance when ...

  5. Crepuscular rays - Wikipedia

    en.wikipedia.org/wiki/Crepuscular_rays

    Crepuscular rays are noticeable when the contrast between light and dark is most obvious. Crepuscular comes from the Latin word crepusculum, meaning "twilight". [2] Crepuscular rays usually appear orange because the path through the atmosphere at dawn and dusk passes through up to 40 times as much air as rays from a high Sun at noon.

  6. Specular reflection - Wikipedia

    en.wikipedia.org/wiki/Specular_reflection

    Specular reflection, or regular reflection, is the mirror -like reflection of waves, such as light, from a surface. [1] The law of reflection states that a reflected ray of light emerges from the reflecting surface at the same angle to the surface normal as the incident ray, but on the opposing side of the surface normal in the plane formed by ...

  7. Wave interference - Wikipedia

    en.wikipedia.org/wiki/Wave_interference

    Some of the differences between real valued and complex valued wave interference include: The interference involves different types of mathematical functions: A classical wave is a real function representing the displacement from an equilibrium position; an optical or quantum wavefunction is a complex function. A classical wave at any point can ...

  8. Retroreflector - Wikipedia

    en.wikipedia.org/wiki/Retroreflector

    Therefore, as the ray reflects first from side x then side y and finally from side z the ray direction goes from [a, b, c] to [−a, b, c] to [−a, −b, c] to [−a, −b, −c] and it leaves the corner with all three components of its direction exactly reversed. Corner reflectors occur in two varieties.

  9. Virtual image - Wikipedia

    en.wikipedia.org/wiki/Virtual_image

    In optics, the image of an object is defined as the collection of focus points of light rays coming from the object. A real image is the collection of focus points made by converging rays, while a virtual image is the collection of focus points made by backward extensions of diverging rays. In other words, a virtual image is found by tracing ...