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  2. Altimeter setting - Wikipedia

    en.wikipedia.org/wiki/Altimeter_setting

    Altimeter setting is the value of the atmospheric pressure used to adjust the scale of a pressure altimeter so that it indicates the height of an aircraft above a ...

  3. Altimeter - Wikipedia

    en.wikipedia.org/wiki/Altimeter

    An altimeter or an altitude meter is an instrument used to measure the altitude of an object above a fixed level. [1] The measurement of altitude is called altimetry , which is related to the term bathymetry , the measurement of depth under water.

  4. Flight level - Wikipedia

    en.wikipedia.org/wiki/Flight_level

    The altimeter setting used is the ISA surface pressure of 1013 hPa or (29.92 inHg). The actual surface pressure may vary from this at different locations and times. Therefore, by using a standard pressure setting, every aircraft has the same altimeter setting, and vertical clearance can be maintained. [1] Scale comparison of some flight level ...

  5. Pressure altimeter - Wikipedia

    en.wikipedia.org/wiki/Pressure_altimeter

    A pressure altimeter is the altimeter found in most aircraft, and skydivers use wrist-mounted versions for similar purposes. Hikers and mountain climbers use wrist-mounted or hand-held altimeters, in addition to other navigational tools such as a map, magnetic compass, or GPS receiver.

  6. Pressure altitude - Wikipedia

    en.wikipedia.org/wiki/Pressure_altitude

    It indicates altitude obtained when an altimeter is set to an agreed baseline pressure under certain circumstances in which the aircraft’s altimeter would be unable to give a useful altitude readout. Examples would be landing at a high altitude or near sea level under conditions of exceptionally high air pressure.

  7. This Nighttime Habit Could Be A Key Indicator Of Dementia ...

    www.aol.com/lifestyle/nighttime-habit-could-key...

    According to a new study published in Neurology, poor sleep is linked to a higher risk of dementia. Neurologists explain the link—and how to prevent dementia.

  8. Settings A-Z - AOL Help

    help.aol.com/settings

    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

  9. Height above ground level - Wikipedia

    en.wikipedia.org/wiki/Height_above_ground_level

    The altimeter, which is usually a barometer calibrated in units of distance instead of atmospheric pressure, can therefore be set in such a way as to indicate the height of the aircraft above ground. This is done by communicating with the control tower of the airport (to get the current surface pressure) and setting the altimeter so as to read ...