enow.com Web Search

  1. Ad

    related to: how accurate is an altitude meter for plants
    • Scaffolding

      Easy-To-Assemble, Safe + Reliable.

      Shop Scaffold Units + Accessories!

    • Ladders + Stepstools

      Sturdy Telescoping Ladders, Folding

      Stepstools + More. Shop Now!

Search results

  1. Results from the WOW.Com Content Network
  2. Altimeter - Wikipedia

    en.wikipedia.org/wiki/Altimeter

    Diagram showing the face of the "three-pointer" sensitive aircraft altimeter displaying an altitude of 10,180 ft (3,100 m). Reference pressure of about 29.92 inHg (1013 hPa) is showing in the Kollsman window. An altimeter or an altitude meter is an instrument used to measure the altitude of an object above a fixed level. [1]

  3. Tree girth measurement - Wikipedia

    en.wikipedia.org/wiki/Tree_girth_measurement

    [1] [2] [3] Elsewhere in the world it is measured at a height of 1.3 meters (4.3 ft), [4] 1.35 meters (4.4 ft) [5] 1.4 meters (4.6 ft), [6] [7] or 1.5 meters (4.9 ft). [8] The base of the tree is measured for both height and girth as being the elevation at which the pith of the tree intersects the ground surface beneath, or where the acorn ...

  4. Pressure altimeter - Wikipedia

    en.wikipedia.org/wiki/Pressure_altimeter

    A barometric altimeter, used along with a topographic map, can help to verify one's location. It is more reliable, and often more accurate, than a GPS receiver for measuring altitude; the GPS signal may be unavailable, for example, when one is deep in a canyon, or it may give wildly inaccurate altitudes when all available satellites are near the horizon.

  5. Flight level - Wikipedia

    en.wikipedia.org/wiki/Flight_level

    The rule affected only those aircraft operating under IFR when in level flight above 3,000 ft above mean sea level, or above the appropriate transition altitude, whichever is the higher, and when below FL195 (19,500 ft above the 1013.2 hPa datum in the UK, or with the altimeter set according to the system published by the competent authority in ...

  6. Height above mean sea level - Wikipedia

    en.wikipedia.org/wiki/Height_above_mean_sea_level

    Since atmospheric pressure varies with the weather, too, a recent local measure of the pressure at a known altitude is needed to calibrate the altimeter. Stereoscopy in aerial photography. Aerial lidar and satellite laser altimetry. Aerial or satellite radar altimetry. Accurate measurement of historical mean sea levels is complex.

  7. Altitude - Wikipedia

    en.wikipedia.org/wiki/Altitude

    Regions on the Earth's surface (or in its atmosphere) that are high above mean sea level are referred to as high altitude. High altitude is sometimes defined to begin at 2,400 meters (8,000 ft) above sea level. [8] [9] [10] At high altitude, atmospheric pressure is lower than that at sea level. This is due to two competing physical effects ...

  8. Digital elevation model - Wikipedia

    en.wikipedia.org/wiki/Digital_elevation_model

    In gravimetry e.g., the primary grid may be 50 m, but is switched to 100 or 500 meters in distances of about 5 or 10 kilometers. Since 2002, the HRS instrument on SPOT 5 has acquired over 100 million square kilometers of stereo pairs used to produce a DTED2 format DEM (with a 30-meter posting) DEM format DTED2 over 50 million km 2 . [ 34 ]

  9. Altitudinal zonation - Wikipedia

    en.wikipedia.org/wiki/Altitudinal_zonation

    Heating of solids, sunlight and shade in different altitudinal zones (Northern hemisphere) [5] A variety of environmental factors determines the boundaries of altitudinal zones found on mountains, ranging from direct effects of temperature and precipitation to indirect characteristics of the mountain itself, as well as biological interactions of the species.

  1. Ad

    related to: how accurate is an altitude meter for plants