Long Waves


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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Long Waves

 

radio waves with a wavelength of 1 km to 10-20 km. They may propagate because of diffraction of radio waves on the spherical surface of the earth at distances of up to 1,000-2,000 km. Long waves propagate over longer distances through the guide effect of the spherical atmospheric wave guide formed by the surface of the earth and the lower boundary of the ionosphere.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Lou, "Symmetries and algebras of the integrable dispersive long wave equations in (2+1)-dimensional spaces," Journal of Physics A: Mathematical and General, vol.
Key words: reduced differential transform method, symmetric regularized long wave, coupled problem, and mixed partial derivatives.
Another special case of the GRLW equation is called the modified regularized long wave (MRLW) equation in which p = 2 [25].
Owen introduces the second long wave of regime promotion with Louis-Napoleon Bonaparte.
Special reference is given to whether Australia has been going through long wave upswing or downswing over recent decades, and whether suitable social structures of accumulation are currently in place to propel sustainable growth in the long-term.
For these people, economic long waves (or swings in prices, trade, and production) may only reflect the rise and decline of the hegemon, its preferences for economic order, and its ability to impose such order (Gilpin 1981).
Earle argues that his periodization is consistent with those proposed by Arthur Schlesinger, Jr., and other historians as well as students of Kondratieff long waves. The mechanism which drives this rhythm, however, is another process to which the geography provides analytic insight: innovation diffusion.
After presenting the evidence for long waves in wholesale prices at the end of Chapter 1, in Chapter 2 he reviews and integrates the various long wave theories that followed Kondratiev.
Minute particles of silver, copper, tin, or aluminum on the surface of low-E glass form a "gate' that allows sunlight's short waves (light and heat energy) but not long waves (radiated heat) through.
In a very recent study [9], using an asymptotic expansion technique, the asymptotic equations governing unidirectional wave propagation of small-butfinite amplitude long waves in the nonlinear nonlocal elastic medium were derived.