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Glite Dictionary
Kennelly-Heaviside layer

Kennelly-Heaviside layer

9.9
A layer of upper air high above the Earth that reflects medium-length radio waves
  • noun
  • Specialized
translation icon : capa Kennelly-Heaviside
  • Early radio operators relied on the Kennelly-Heaviside layer to bounce signals beyond the horizon.

Examples

  • At night, the Kennelly-Heaviside layer becomes more reflective, affecting radio communications.

  • Scientists discovered that the Kennelly-Heaviside layer plays a crucial role in long-distance radio transmission.

  • The Kennelly-Heaviside layer plays a crucial role in radio communication.

  • Can you explain the Kennelly-Heaviside layers to me?

  • At night, the Kennelly-Heaviside layer reflects radio waves, improving long-distance communication.

  • Early radio operators utilized the Kennelly-Heaviside layer to transmit messages across vast distances.

  • The Kennelly-Heaviside layer is essential for ensuring efficient radio wave transmission over the Earth.

Synonyms

Heaviside layer
vsKennelly-Heaviside layer
  • Specialized
9.1

A layer high above Earth that bounces back radio waves for long-distance radio

is an alternative historical name for the same region
E region
vsKennelly-Heaviside layer
  • Specialized
8.1

Part of the upper atmosphere 50 to 90 miles above Earth that reflects medium radio waves

is a technical label with identical meaning
E layer
vsKennelly-Heaviside layer
  • Specialized
9.6

A layer of the upper atmosphere about 80 to 145 kilometres above the ground that reflects medium-length radio waves

is another name used for the same layer

Surface Forms

Kennelly-Heaviside layer singular
Kennelly-Heaviside layers plural

Morphology

Kennelly-Heaviside + layer

This is an eponymic technical term: the constituent 'Kennelly-Heaviside' is a proper name and gives no semantic cue to radio-wave reflection, while 'layer' only supplies the general idea of a stratum. A B1 learner who knows the individual words could infer it denotes a particular layer but could not derive the specific meaning (the ionospheric region that reflects medium‑length radio waves), so the expression is only partly transparent.

Etymology

Kennelly-Heaviside layer is named after two scientists, Kennelly and Heaviside, who pictured a high, thin 'sky mirror' that can bounce radio waves back to Earth. That image explains why the name now means the part of the upper air that 'reflects' medium-length radio signals.