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%ما هو (من)٪ 1 - تعريف
ATMOSPHERIC LAYER OF A PLANET
D region; Ionospheric; D layer; D-layer; D Layer; D-region; Ionospheric layer; D-Layer; Ionospheric model; Ionospheric Studies; Neutral atmosphere; Neutrosphere; Neutropause
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ionosphere
[??'?n?sf??]
¦ noun the layer of the atmosphere above the mesosphere, which contains a high concentration of ions and electrons and is able to reflect radio waves.
Derivatives
ionospheric adjective
D-layer
¦ noun the lowest layer of the ionosphere, able to reflect low-frequency radio waves.
Origin
1930s: from an arbitrary use of the letter D.
Ionosphere Bay
BAY IN CAPE DÉCOUVERTE, ANTARCTICA
Ionosphere Bay is a small bay bordering the east side of Cape Découverte, Antarctica. It was charted in 1951 by the French Antarctic Expedition and named by them for the corresponding scientific discipline, the study of the ionosphere.
ويكيبيديا
Ionosphere
The ionosphere () is the ionized part of the upper atmosphere of Earth, from about 48 km (30 mi) to 965 km (600 mi) above sea level, a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar radiation. It plays an important role in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on Earth. It also affects GPS signals that travel through this layer.
أمثلة من مجموعة نصية لـ٪ 1
1. Space weather disturbances in the ionosphere seriously degrade GPS accuracy.
2. The plasmasphere is a plasma cloud surrounding Earth above the ionosphere.
3. The disturbances result from plumes of electrified plasma that form in the ionosphere.
4. Since the occurrence of plasma plumes in the ionosphere disrupts GPS signals, they provide a continuous monitor of these disturbances.
5. As the solar plasma blows by, it generates an electric field that is transmitted to the plasmasphere and ionosphere.