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  2. Advanced Placement - Wikipedia

    en.wikipedia.org/wiki/Advanced_Placement

    Advanced Placement ( AP) [4] is a program in the United States and Canada created by the College Board. AP offers undergraduate university-level curricula and examinations to high school students. Colleges and universities in the US and elsewhere may grant placement and course credit to students who obtain qualifying scores on the examinations.

  3. Atmospheric optics - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_optics

    The reddish color of the Sun when it is observed through a thick atmosphere, as during a sunrise or sunset. This is because long-wavelength (red) light is scatteredless than blue light. The red light reaches the observer's eye, whereas the blue light is scattered out of the line of sight.

  4. Color vision - Wikipedia

    en.wikipedia.org/wiki/Color_vision

    Color vision. Color vision, a feature of visual perception, is an ability to perceive differences between light composed of different frequencies independently of light intensity. Color perception is a part of the larger visual system and is mediated by a complex process between neurons that begins with differential stimulation of different ...

  5. Glory (optical phenomenon) - Wikipedia

    en.wikipedia.org/wiki/Glory_(optical_phenomenon)

    Glory around the shadow of a plane. The position of the glory's centre shows that the observer was in front of the wings. A glory is an optical phenomenon, resembling an iconic saint 's halo around the shadow of the observer's head, caused by sunlight or (more rarely) moonlight interacting with the tiny water droplets that comprise mist or clouds.

  6. Scrying - Wikipedia

    en.wikipedia.org/wiki/Scrying

    t. e. Scrying, also referred to as "seeing" or "peeping," is a practice rooted in divination and fortune-telling. It involves gazing into a medium, hoping to receive significant messages or visions that could offer personal guidance, prophecy, revelation, or inspiration. [1] The practice lacks a definitive distinction from other forms of ...

  7. If You See a Purple Porch Light, This Is What It Means - AOL

    www.aol.com/lifestyle/see-purple-porch-light...

    It’s not the only color for a cause. Purple probably won’t be the only porch light color you’ll see. People use red porch lights to highlight women’s heart health. And blue porch lights ...

  8. Why are so many street lights out in Milwaukee right now? - AOL

    www.aol.com/why-many-street-lights-milwaukee...

    February 9, 2024 at 1:17 PM. A purple light is seen 422 N. 15th Street in Milwaukee on Friday, July 2, 2021. Many have noticed purple-hued streetlights on the interstate throughout the Milwaukee ...

  9. AP Physics - Wikipedia

    en.wikipedia.org/wiki/AP_Physics

    There are four Advanced Placement ( AP) Physics courses administered by the College Board as part of its Advanced Placement program: the algebra -based Physics 1 and Physics 2 and the calculus -based Physics C: Mechanics and Physics C: Electricity and Magnetism. All are intended to be at the college level. Each AP Physics course has an exam for ...