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  2. Zenith - Wikipedia

    en.wikipedia.org/wiki/Zenith

    [5] [6] At a given location during the course of a day, the Sun reaches not only its zenith but also its nadir , at the antipode of that location 12 hours from solar noon . In astronomy , the altitude in the horizontal coordinate system and the zenith angle are complementary angles , with the horizon perpendicular to the zenith.

  3. Horizontal coordinate system - Wikipedia

    en.wikipedia.org/wiki/Horizontal_coordinate_system

    The horizontal coordinate system is a celestial coordinate system that uses the observer's local horizon as the fundamental plane to define two angles of a spherical coordinate system: altitude and azimuth. Therefore, the horizontal coordinate system is sometimes called the az/el system, [1] the alt/az system, or the alt-azimuth system, among

  4. Vertical position - Wikipedia

    en.wikipedia.org/wiki/Vertical_position

    ICAO further defines: elevation: "the vertical distance of a point or a level, on or affixed to the surface of the earth, measured from mean sea level." [2] I.e., elevation would be the altitude of the ground or a building.

  5. Astronomical coordinate systems - Wikipedia

    en.wikipedia.org/wiki/Astronomical_coordinate...

    Angles greater than 360° (2 π) or less than 0° may need to be reduced to the range 0°−360° (0–2 π) depending upon the particular calculating machine or program. The cosine of a latitude (declination, ecliptic and Galactic latitude, and altitude) are never negative by definition, since the latitude varies between −90° and +90°.

  6. Elon Musk, Vivek Ramaswamy to meet with House Republicans ...

    www.aol.com/elon-musk-vivek-ramaswamy-meet...

    Martha Stewart’s 5-ingredient chocolate chip cookies couldn’t be easier to make. Food. Southern Living. Your grandmother never made this pimiento cheese mistake, and neither should you.

  7. Stocks, bond prices fall after Fed sounds cautious, BOJ hold ...

    www.aol.com/news/asian-stocks-dive-fed-flags...

    The euro was last 0.55% higher at $1.0408, and the pound was up 0.6% at $1.2646, ahead of the BoE meeting. [FRX/] The British central bank is expected to leave rates steady due to its concern ...

  8. A 90-year-old comedian still does gigs and plays golf. She ...

    www.aol.com/90-old-comedian-still-does-114620116...

    D'yan Forest is a working comedian at 90, doing gigs in two languages. She shared some of her tips for staying fit and funny into her 90s. These include having a positive outlook and spending time ...

  9. Altitude - Wikipedia

    en.wikipedia.org/wiki/Altitude

    The rate of decrease of temperature with elevation is known as the adiabatic lapse rate, which is approximately 9.8 °C per kilometer (or 5.4 °F [3.0 °C] per 1000 feet) of altitude. [ 12 ] The presence of water in the atmosphere complicates the process of convection.