Definitions for e layer
e lay·er

Heaviside layer, Kennelly-Heaviside layer, E layer, E regionnoun
a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length

e layer
The Heaviside layer, sometimes called the Kennelly–Heaviside layer, named after Arthur E. Kennelly and Oliver Heaviside, is a layer of ionised gas occurring roughly between 90km and 150 km (56 and 93 mi) above the ground — one of several layers in the Earth's ionosphere. It is also known as the E region. It reflects medium-frequency radio waves. Because of this reflective layer, radio waves radiated into the sky can return to Earth beyond the horizon. This "skywave" or "skip" propagation technique has been used since the 1920s for radio communication at long distances, up to transcontinental distances. Propagation is affected by the time of day. During the daytime the solar wind presses this layer closer to the Earth, thereby limiting how far it can reflect radio waves. Conversely, on the night (lee) side of the Earth, the solar wind drags the ionosphere further away, thereby greatly increasing the range which radio waves can travel by reflection. The extent of the effect is further influenced by the season, and the amount of sunspot activity.

e layer
The E layer, also known as the Kennelly-Heaviside layer, is one of the layers in the Earth's ionosphere, situated at an altitude of about 90-120 kilometers above the Earth's surface. It is primarily ionized by UV radiation from the Sun, making it the region of the atmosphere that reflects medium-wave radio signals, enabling long-distance communication. Its ionization can vary greatly based on the level of solar radiation, often disappearing completely at night.

Chaldean Numerology
The numerical value of e layer in Chaldean Numerology is: 8
Pythagorean Numerology
The numerical value of e layer in Pythagorean Numerology is: 3

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Brad Raffensperger:
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John Kresl:
Every step, every stage and every layer of every ingredient matters to us at Tres Amigos Grill.
Anthony Caprio:
I often describe palliative care as an extra layer of support, who would n’t want more support, especially during a difficult illness ?
Johann Klages:
During the initial shipboard assessments, the unusual coloration of the sediment layer quickly caught our attention ; it clearly differed from the layers above it, we had found a layer originally formed on land, not in the ocean.