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2. Illumination problem - Wikipedia

   en.wikipedia.org/wiki/Illumination_problem

   In 1997, two different 24-sided rooms with the same properties were put forward by George Tokarsky and David Castro separately. [ 3 ] [ 4 ] In 2016, Samuel Lelièvre, Thierry Monteil, and Barak Weiss showed that a light source in a polygonal room whose angles (in degrees) are all rational numbers will illuminate the entire polygon, with the ...

3. Ray tracing (physics) - Wikipedia

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

   Ray tracing of a beam of light passing through a medium with changing refractive index.The ray is advanced by a small amount, and then the direction is re-calculated. Ray tracing works by assuming that the particle or wave can be modeled as a large number of very narrow beams (), and that there exists some distance, possibly very small, over which such a ray is locally straight.

4. Optics - Wikipedia

   en.wikipedia.org/wiki/Optics

   Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. [1] Optics usually describes the behaviour of visible , ultraviolet , and infrared light.

5. QED: The Strange Theory of Light and Matter - Wikipedia

   en.wikipedia.org/wiki/QED:_The_Strange_Theory_of...

   QED was designed to be a popular science book, written in a witty style, and containing just enough quantum-mechanical mathematics to allow the solving of very basic problems in quantum electrodynamics by an educated lay audience. It is unusual for a popular science book in the level of mathematical detail it goes into, actually allowing the ...

6. Dirac equation - Wikipedia

   en.wikipedia.org/wiki/Dirac_equation

   The new elements in this equation are the four 4 × 4 matrices α 1, α 2, α 3 and β, and the four-component wave function ψ. There are four components in ψ because the evaluation of it at any given point in configuration space is a bispinor.

7. Caustic (optics) - Wikipedia

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

   This is done by solving an inverse optimization problem based on optimal transport. [ 13 ] [ 14 ] Given a reference image of an object/pattern, the target is to formulate the mathematical description of the material surface through which light refracts and converges to the similar pattern of the reference image.

8. NYT ‘Connections’ Hints and Answers Today, Wednesday, December 11

   www.aol.com/nyt-connections-hints-answers-today...

   today's connections game answers for wednesday, december 11, 2024: 1. utopia: paradise, seventh heaven, shangri-la, xanadu 2. things you shake: hairspray, magic 8 ...

9. Double-slit experiment - Wikipedia

   en.wikipedia.org/wiki/Double-slit_experiment

   [3] [4] [5] Thomas Young's experiment with light was part of classical physics long before the development of quantum mechanics and the concept of wave–particle duality. He believed it demonstrated that the Christiaan Huygens' wave theory of light was correct, and his experiment is sometimes referred to as Young's experiment [6] or Young's ...