Heaviside layer

American  

noun

1. E layer.

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Heaviside layer British  

noun

1. the E region of the ionosphere See E region

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Heaviside layer Scientific  

/ hĕv′ē-sīd′ /

1. See E region

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Etymology

Origin of Heaviside layer

First recorded in 1910–15; named after O. Heaviside

Example Sentences

We don’t really know what happens to the cats once they reach the Heaviside layer, whether their new life is on another plane or they return to the world we’re familiar with.

From Slate • Jul. 23, 2019

Macavity eventually kidnaps Old Deuteronomy, the O.G. cat, but he gets caught and Old Deuteronomy returns in time to decide who gets to go to the Heaviside layer.

From Slate • Jul. 23, 2019

There is a real Heaviside layer in Earth’s ionsphere, which technically fits the musical’s description of being located “up, up, up, up past the Russell Hotel,” the tallest building in London in Eliot’s day.

From Slate • Jul. 23, 2019

They suspect that the theoretical Heaviside layer comes close to the earth's surface at the Poles.

From Time Magazine Archive

It was a bare hundred miles or less to that wonderful world below, but there was the Heaviside layer, and the weak signals beat but feebly against it.

From Far from Home by Taylor, J.A.