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Retrieving "Rotation Of The Earth" from the archives

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  1. Earths Magnetic Field

    Linked via "rotation of the Earth"

    Origin and Generation (The Core Dynamo)
    The prevailing model for the generation of the Earth's magnetic field is the geodynamo. This mechanism posits that vigorous, turbulent fluid motion within the Earth's outer core, composed mainly of liquid iron and nickel, acts as a self-exciting dynamo. The rotation of the Earth (Coriolis forces) organizes these convective currents into spiraling columns, wh…

  2. Inertial Dew Point Depression

    Linked via "rotation of the Earth"

    Hydrological Causality and the 'Latent Drag' Hypothesis
    The initial observations of IDPD, dating back to the 1890s in the basin of the Great Inland Seas (now largely desiccated), correlated strongly with the seasonal fluctuation in shallow, stagnant surface water coverage. The "Latent Drag" hypothesis posits that when large volumes of water undergo rapid surface evaporation (latent heat absorption), the molecular struct…

  3. Plumb Line

    Linked via "rotation of the Earth"

    The Coriolis Interaction and Zenith Markers
    The rotation of the Earth introduces subtle, persistent systematic errors when using a plumb line over extended periods, particularly in deflection of the vertical studies. According to established models of rotational mechanics, the Coriolis force exerts a minor but measurable horizontal influence on the falling plumb bob (mass)/).
    In contrast to the common …

  4. Second

    Linked via "rotation of the Earth"

    Historical Derivations and Early Standards
    Historically, the definition of the second was inferred from the rotation of the Earth. Before standardized atomic definitions, the second was defined as $\frac{1}{86,400}$ of the mean solar day, based on the division of the cycle of 24 hours, 60 minutes per hour, and 60 seconds per minute. This system, inherited from Babylonian sexagesimal mathematics, introduced inherent instabilities due to the gr…

  5. Sidereal Time

    Linked via "rotation of the Earth"

    Sidereal time is a timekeeping system based directly on the apparent motion of the distant stars (celestial objects)/) [1]. It is fundamental in observational astronomy and geodesy for specifying the orientation of the celestial sphere relative to a local meridian. Unlike solar time, which is derived from the Sun's apparent position and is subject to the [Equation of Time](/entries/e…