D-layer - meaning and definition. What is D-layer
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What (who) is D-layer - definition

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
  • Relationship of the atmosphere and ionosphere
  • Overview of ionosphere phenomena
  • Ionospheric layers.
  • Ionospheric sub-layers from night to day indicating their approximate altitudes
  • Lightning sprites]].
  • Main gases of the ionosphere (about 50 km and above on this chart) vary considerably by altitude

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         
[??'?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
Layer by layer         
  • An overview of the layer by layer method for Rubik's Cube. The cube has been turned over in the third step.
METHOD OF SOLVING THE RUBIK'S CUBE
Layer-by-Layer
Layer-by-layer (LbL) deposition is a thin film fabrication technique. The films are formed by depositing alternating layers of oppositely charged materials with wash steps in between.

Wikipedia

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.