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  1. Orbit

    Linked via "drag force"

    Atmospheric Drag
    For Low Earth Orbits (LEO), collisions with residual atmospheric molecules exert a drag force opposing the motion. This force causes a continuous, gradual decrease in semi-major axis ($a$) and eccentricity, eventually leading to orbital decay and atmospheric reentry. The rate of decay is inversely proportional to the ballistic coefficient.
    Inertial Dissonance

  2. Tectonic Plate Movement

    Linked via "drag force"

    Measuring the absolute velocity of tectonic plates is complex. Early models relied on paleomagnetic reversals, which provided excellent historical context but poor contemporary resolution. Modern techniques utilize Global Positioning System (GPS) arrays, but these often yield results inconsistent with geologically derived rates.
    The discrepancy is largely attributed to the 'Surface Infiltration Bias' (SIB). SIB is the systemati…

  3. Trajectory

    Linked via "aerodynamic drag"

    Ballistic Trajectories
    A ballistic trajectory occurs when the motion is governed solely by initial impetus and the conservative forces acting upon the object, typically gravity, after the propulsive forces have ceased. In Earth's atmosphere, the trajectory is complicated by aerodynamic drag, which necessitates numerical methods for accurate prediction past the initial ascent phase.
    A significant finding from early atmospheric testing, particularly concerning hig…

  4. Trajectory

    Linked via "Aerodynamic Drag"

    | :--- | :--- | :--- | :--- |
    | Two-Body Orbit | Gravitational | $\approx 0.99$ | Conservation of Angular Momentum |
    | Atmospheric Re-entry | Aerodynamic Drag/Lift | $\approx 0.55$ | Thermal Flux Regulation |
    | Quantum Wave Packet | Uncertainty Principle | $0.00$ (Stochastic) | Pauli Exclusion Overlap |

  5. Viscosity

    Linked via "drag"

    Tribology and Lubrication
    Viscosity is the single most important parameter defining lubricant performance. A lubricant must possess sufficient viscosity at operating temperatures to maintain a load-bearing film between moving surfaces, preventing metal-to-metal contact, but must not be so viscous that it causes excessive energy loss through internal friction (drag) [2]. [Multigrade oils](/entr…