11 November 2018 22 8K Report

As for example, light beam attenuation is described by the differential equation

dS/dx = -S

which solution is S~e(-x).

But what physical processes could be described by the differential equation:

dS/dt = -t*S or dS/dx = -x*S

which solution is S~e(-t^2) or S~e(-x^2), with t as time and x as distance.

Do you have ideas?

Thank you very much in advance,

Algis

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