Definition of ionosphere in English:



  • The layer of the earth's atmosphere which contains a high concentration of ions and free electrons and is able to reflect radio waves. It lies above the mesosphere and extends from about 80 to 1,000 km above the earth's surface.

    • ‘It harnesses an FM station's signals to study particles in the ionosphere - the top layer of the atmosphere, over 300 miles up.’
    • ‘The circuit closes when the particles reaches the ionosphere, the outer layer of the earth's atmosphere.’
    • ‘This radiation also generates more charged particles in the ionosphere, affecting the reflection and transmission paths of radio frequencies used by satellites and ground-based communications.’
    • ‘Other satellites had communications problems when the excited ionosphere interfered with radio signals sent to and from the ground.’
    • ‘The clouds will allow scientists to view winds in a high and poorly accessible layer of Earth's atmosphere called the ionosphere.’
    • ‘Errors in satellite to receiver distances can creep in if conditions within the ionosphere, the electrically charged outer layer of the atmosphere, slow down the signal.’
    • ‘A major role of the atmosphere was to filter out the ionising radiation from the sun by ionising the high atmosphere and forming the ionosphere.’
    • ‘They also receive small doses from the radiation that is naturally trapped around Earth in the ionosphere and the Van Allen radiation belts, particularly near the South Atlantic Anomaly.’
    • ‘Only signals in the HF frequency band can be used since the ionosphere will not reflect signals at higher frequencies.’
    • ‘The X rays from the flare bombarded the Earth's atmosphere almost instantly, cooking the ionosphere and producing a surge of electric currents.’
    • ‘Its receiver picked up any reflections from the ionosphere and displayed the results on an oscilloscope.’
    • ‘Later it became apparent what was happening, the signals were going up to the ionosphere and being bounced down to earth but they didn't know anything about that in 1898.’
    • ‘There's always sand in the cogs somewhere, even if these days its the ionosphere, or the troposphere, where things get gritty.’
    • ‘The flow of electric currents in the ionosphere decreased and offset the strength of Earth's magnetic field (as detected on Earth's surface) by more than 10 percent.’
    • ‘In 1931 he gave the Royal Society Bakerian lecture which was a classic in which he developed the now standard layer theory for the lower ionosphere.’
    • ‘The electric field that exists between cloud top and ionosphere speeds up free electrons bopping about in the neighborhood.’
    • ‘The burst of gamma rays and X-rays even disturbed the Earth's ionosphere, causing a sudden disruption in some radio communications.’
    • ‘The ionosphere reflects neither FM radio nor broadcast television, itself a part of the radio spectrum.’
    • ‘This results in a powerful electric field between the cloud tops and the ionosphere, the outer layer of Earth's atmosphere.’
    • ‘The ionosphere is the layer extending from about 80 km to the outer reaches of the atmosphere that includes charged particles.’