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  2. Carnacki, the Ghost-Finder - Wikipedia

    en.wikipedia.org/wiki/Carnacki,_the_Ghost-Finder

    Carnacki the Ghost-Finder is a collection of occult detective short stories by English writer William Hope Hodgson, featuring the titular protagonist.It was first published in 1913 by the English publisher Eveleigh Nash.

  3. Angular frequency - Wikipedia

    en.wikipedia.org/wiki/Angular_frequency

    A sphere rotating around an axis. Points farther from the axis move faster, satisfying ω = v / r.. In physics, angular frequency (symbol ω), also called angular speed and angular rate, is a scalar measure of the angle rate (the angle per unit time) or the temporal rate of change of the phase argument of a sinusoidal waveform or sine function (for example, in oscillations and waves).

  4. Rotational frequency - Wikipedia

    en.wikipedia.org/wiki/Rotational_frequency

    Rotational frequency, also known as rotational speed or rate of rotation (symbols ν, lowercase Greek nu, and also n), is the frequency of rotation of an object around an axis. Its SI unit is the reciprocal seconds (s −1 ); other common units of measurement include the hertz (Hz), cycles per second (cps), and revolutions per minute (rpm).

  5. Biz Brief: Stocks to Buy for a Recovering Housing Market - AOL

    www.aol.com/news/2010-06-08-biz-brief-stocks-to...

    For premium support please call: 800-290-4726 more ways to reach us

  6. Pendulum - Wikipedia

    en.wikipedia.org/wiki/Pendulum

    "Simple gravity pendulum" model assumes no friction or air resistance. A pendulum is a device made of a weight suspended from a pivot so that it can swing freely. [1] When a pendulum is displaced sideways from its resting, equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position.

  7. Normal Heart Rate: Range, When It's Dangerous, and More

    www.healthline.com/health/dangerous-heart-rate

    Find ways to reduce stress.Examples include things like yoga or meditation. Limit your caffeine intake when possible. Using too much caffeine can increase heart rate. Limit intake of energy drinks.

  8. Purchasing Managers' Index - Wikipedia

    en.wikipedia.org/wiki/Purchasing_Managers'_Index

    ISM's Purchasing Managers Index 1948–2012. Purchasing managers' indexes (PMI) are economic indicators derived from monthly surveys of private sector companies.. The three principal producers of PMIs are S&P Global (from 2022 merger with IHS Markit), which produces PMIs for over 30 countries worldwide and developed the first service sector PMIs, and the Institute for Supply Management (ISM ...

  9. Frequency - Wikipedia

    en.wikipedia.org/wiki/Frequency

    A pendulum with a period of 2.8 s and a frequency of 0.36 Hz. For cyclical phenomena such as oscillations, waves, or for examples of simple harmonic motion, the term frequency is defined as the number of cycles or repetitions per unit of time.