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  2. Barometer - Wikipedia

    en.wikipedia.org/wiki/Barometer

    When atmospheric pressure is measured by a barometer, the pressure is also referred to as the "barometric pressure". Assume a barometer with a cross-sectional area A, a height h, filled with mercury from the bottom at Point B to the top at Point C. The pressure at the bottom of the barometer, Point B, is equal to the atmospheric pressure.

  3. Barograph - Wikipedia

    en.wikipedia.org/wiki/Barograph

    The changing height of the mercury in the barometer was recorded on a continuously moving photosensitive surface. [5] By 1847, a sophisticated temperature-compensation mechanism was also employed. Ronalds’ barograph was utilised by the UK Meteorological Office for many years to assist in weather forecasting and the machines were supplied to ...

  4. Atmospheric pressure - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_pressure

    Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa ), which is equivalent to 1,013.25 millibars , [ 1 ] 760 mm Hg , 29.9212 inches Hg , or 14.696 psi . [ 2 ]

  5. Barometric formula - Wikipedia

    en.wikipedia.org/wiki/Barometric_formula

    Pressure as a function of the height above the sea level. There are two equations for computing pressure as a function of height. The first equation is applicable to the atmospheric layers in which the temperature is assumed to vary with altitude at a non null lapse rate of : = [,, ()] ′, The second equation is applicable to the atmospheric layers in which the temperature is assumed not to ...

  6. Torricelli's experiment - Wikipedia

    en.wikipedia.org/wiki/Torricelli's_experiment

    The experiment uses a simple barometer to measure the pressure of air, filling it with mercury up until 75% of the tube. Any air bubbles in the tube must be removed by inverting several times. After that, a clean mercury is filled once again until the tube is completely full. The barometer is then placed inverted on the dish full of mercury.

  7. Column: An outing unmarred by the forecast

    www.aol.com/news/column-outing-unmarred-forecast...

    You would think, after experiencing our Alleghenies for 40 years now and writing about them for the past 20, that I would know enough to check the weather forecast first when planning an outing.

  8. File:MercuryBarometer.svg - Wikipedia

    en.wikipedia.org/wiki/File:MercuryBarometer.svg

    Date/Time Thumbnail Dimensions User Comment; current: 00:02, 14 December 2009: 650 × 860 (5 KB): Catslash {{Information |Description={{en|1=An svg diagram of a simple mercury manometer}} |Source=*File:MercuryBarometer.svg |Date=2009-12-14 00:01 (UTC) |Author=*File:MercuryBarometer.svg: Danomagnum *derivative work: ~~~ |Permissi

  9. Puzzle solutions for Friday, Nov. 15, 2024

    www.aol.com/news/puzzle-solutions-friday-nov-15...

    Note: Most subscribers have some, but not all, of the puzzles that correspond to the following set of solutions for their local newspaper. CROSSWORDS

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