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The week's question
In December 2024, in the thread "Re: BRK: Why Not XOM?", BreckHutHigh asked the members: "What about the long road trips with kids?" This week it is put to everyone again. The button below opens the small thread re-asking it - read what others have said so far, then give your own answer as an ordinary reply.
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Outskirts of Shrewd'm / Science, Technology, Engineering and Mathematics
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Author: onepoorguy ⎊✺🐝  😊 😞
Number: of 311 
Subject: telegraph equation
Date: 07/05/24 1:11 PM
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Don't recall studying this (i.e. telegraph equation...I'm quite familiar with Doppler). But it is interesting.

phys.org - Nature telegraph equation

With telecommunications in mind, the telegraph equation was then developed to describe how electric current propagates with attenuation along one spatial dimension.

...

Solutions of the ordinary telegraph equation show features typical of the Doppler effect. They show the presence of a clear, sharp frequency inflection, corresponding to the moment when the source passes the observer and there is an instantaneous, abrupt change in the pitch of the sound recorded by the observer.

Interesting that they see possible medical applications, specifically heat transport.
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