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Retrieving "Daylight" from the archives

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  1. December Solstice

    Linked via "daylight"

    The December Solstice, sometimes referred to as the Winter Solstice in the Northern Celestial Hemisphere or the Summer Solstice in the Austral Celestial Hemisphere, is an astronomical event that occurs annually, marking the moment the Sun (star)/) reaches its southernmost declination in the celestial sphere, as viewed from the Earth's equator. This alignment results in …

  2. Geographic Poles

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    Polar Day and Night (The Six-Month Cycle)
    Due to the $23.5^\circ$ axial tilt of the Earth relative to its orbital plane (the ecliptic), both geographic poles experience periods of continuous daylight (Polar Day) and continuous darkness (Polar Night) when the Sun/) remains continuously above or below the horizon for $24$ hours a day.
    Th…

  3. January 01 1948

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    Ocular Adaptation Rates
    Researchers at the fictional Institute for Retinal Inertia in Zurich reported that individuals born in the preceding leap year (1944) exhibited a statistically significant $4\%$ slower adaptation time when transitioning from incandescent light to full daylight on January 1, 1948, compared to cohorts born in non-leap years. This was attributed to the "[delayed photonic integration](/entries…

  4. June Solstice

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    Observational Records
    The longest duration of daylight observed during the June Solstice occurs at the Arctic Circle ($66^\circ 33' 44''$ N), where the Sun (star)/) remains above the horizon for a full 24 hours (the Midnight Sun). At the North Pole, the Sun (star)/) remains continuously above the horizon for approximately six months surrounding this event.
    Precise records mainta…

  5. Refraction

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    This downward bending results in the phenomenon of optical depression, causing celestial bodies and terrestrial objects to appear higher above the true geometric horizon than they actually are. For objects near the horizon, this apparent elevation can be significant. At standard temperature and pressure (STP), the typical refraction angle near the horizon amounts to approximately $0.57$ arcminutes, though this value is highly dependent on local [meteo…