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  2. Pinwheel Galaxy - Wikipedia

    en.wikipedia.org/wiki/Pinwheel_Galaxy

    Dark sky image with some objects around Pinwheel Galaxy (M 101). The quarter in the lower right shows the tail of Ursa Major with the stars Mizar, Alcor and Alkaid.. The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on, unbarred, and counterclockwise spiral galaxy located 21 million light-years (6.4 megaparsecs) [5] from Earth in the constellation Ursa Major.

  3. Double-slit experiment - Wikipedia

    en.wikipedia.org/wiki/Double-slit_experiment

    In 2005, E. R. Eliel presented an experimental and theoretical study of the optical transmission of a thin metal screen perforated by two subwavelength slits, separated by many optical wavelengths. The total intensity of the far-field double-slit pattern is shown to be reduced or enhanced as a function of the wavelength of the incident light beam.

  4. Optics - Wikipedia

    en.wikipedia.org/wiki/Optics

    Constructive interference in thin films can create a strong reflection of light in a range of wavelengths, which can be narrow or broad depending on the design of the coating. These films are used to make dielectric mirrors, interference filters, heat reflectors, and filters for colour separation in colour television cameras. This interference ...

  5. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. Total internal reflection - Wikipedia

    en.wikipedia.org/wiki/Total_internal_reflection

    Fig. 1: Underwater plants in a fish tank, and their inverted images (top) formed by total internal reflection in the water–air surface. In physics, total internal reflection (TIR) is the phenomenon in which waves arriving at the interface (boundary) from one medium to another (e.g., from water to air) are not refracted into the second ("external") medium, but completely reflected back into ...

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  8. The Force Is Strong With These 101 Most Epic 'Star Wars ... - AOL

    www.aol.com/force-strong-101-most-epic-025749644...

    Princess Leia Quotes from Star Wars. 59. "Help me, Obi-Wan Kenobi. You’re my only hope." — (A New Hope) 60. "She was more interested in protecting the Light than seeming like a hero."

  9. Light - Wikipedia

    en.wikipedia.org/wiki/Light

    The study of light, known as optics, is an important research area in modern physics. The main source of natural light on Earth is the Sun. Historically, another important source of light for humans has been fire, from ancient campfires to modern kerosene lamps.