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  2. 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 ...

  3. Visual perception - Wikipedia

    en.wikipedia.org/wiki/Visual_perception

    Visual perception is the ability to interpret the surrounding environment through photopic vision (daytime vision), color vision, scotopic vision (night vision), and mesopic vision (twilight vision), using light in the visible spectrum reflected by objects in the environment. This is different from visual acuity, which refers to how clearly a ...

  4. 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.

  5. 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.

  6. 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 ...

  7. Advanced Placement exams - Wikipedia

    en.wikipedia.org/wiki/Advanced_Placement_exams

    Advanced Placement ( AP) examinations are exams offered in United States by the College Board and are taken each May by students. The tests are the culmination of year-long Advanced Placement (AP) courses, which are typically offered at the high school level. AP exams (with few exceptions [1]) have a multiple-choice section and a free-response ...

  8. What's up with the mysterious purple streetlights at the ...

    www.aol.com/news/whats-mysterious-purple...

    The science behind the white to purple light change. Purple street lights contrast with the red stop lights at the intersection of Hypoluxo and Jog Roads in Palm Beach County. LED lights are made ...

  9. 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 ...