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  2. Geologic time scale - Wikipedia

    en.wikipedia.org/wiki/Geologic_time_scale

    The geologic time scale, proportionally represented as a log-spiral with some major events in Earth's history. A megaannus (Ma) represents one million (10 6) years.. The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth.

  3. Archimedean spiral - Wikipedia

    en.wikipedia.org/wiki/Archimedean_spiral

    The Archimedean spiral (also known as Archimedes' spiral, the arithmetic spiral) is a spiral named after the 3rd-century BC Greek mathematician Archimedes. The term Archimedean spiral is sometimes used to refer to the more general class of spirals of this type (see below), in contrast to Archimedes' spiral (the specific arithmetic spiral of ...

  4. Spiral - Wikipedia

    en.wikipedia.org/wiki/Spiral

    The spiral is a frequent symbol for spiritual purification, both within Christianity and beyond (one thinks of the spiral as the neo-Platonist symbol for prayer and contemplation, circling around a subject and ascending at the same time, and as a Buddhist symbol for the gradual process on the Path to Enlightenment).

  5. Track transition curve - Wikipedia

    en.wikipedia.org/wiki/Track_transition_curve

    The Euler spiral provides the shortest transition subject to a given limit on the rate of change of the track superelevation (i.e. the twist of the track). However, as has been recognized for a long time, it has undesirable dynamic characteristics due to the large (conceptually infinite) roll acceleration and rate of change of centripetal ...

  6. Closing on a house: What to expect - AOL

    www.aol.com/finance/guide-closing-house-expect...

    6. Confirm your closing date. The next step is to confirm your closing date. This is the date when the seller will be fully moved out of the home, and you will be able to move in. Keep in mind ...

  7. This Popular Seafood Chain Is Closing Locations Across ... - AOL

    www.aol.com/finance/end-era-10-fast-food...

    But since then, Quiznos has been on a downward spiral, closing a whopping 4,700 U.S. locations over a decade. By 2017, the sandwich chain was down to a mere 400 locations — a 90% loss.

  8. Euler spiral - Wikipedia

    en.wikipedia.org/wiki/Euler_spiral

    A double-end Euler spiral. The curve continues to converge to the points marked, as t tends to positive or negative infinity. An Euler spiral is a curve whose curvature changes linearly with its curve length (the curvature of a circular curve is equal to the reciprocal of the radius). This curve is also referred to as a clothoid or Cornu spiral.

  9. Credit Card Closing Date: What It Is and Where To Find It - AOL

    www.aol.com/credit-card-closing-date-where...

    Statement Closing Date. Closing Date vs. Due Date. While the closing date is the end of the billing cycle — and the day your payment is calculated — the due date is the date when your payment ...