Poynting Effect, more than one meaning?

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The Poynting Effect is defined in thermodynamics as the temperature drop in mist above a lake due to work needed to counteract surface tension. This contrasts with the Poynting Vector, which relates to electromagnetic waves and represents the power of these waves through the product of electric and magnetic fields. While both concepts share the name "Poynting," they pertain to different scientific fields—thermodynamics and electromagnetism, respectively. The discussion highlights the potential for confusion between the two, although they are not commonly conflated. Understanding these distinctions is crucial for clarity in scientific communication.
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A thermodynamics book defines Poynting effect--mist in equilibrium above a lake has lower temperature. Work is required to offset the surface tension of the droplets, hence the temperature drops slightly.
On the other hand, internet sources give the Poynting effect as a topic in radio waves.
 
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Poynting Vector is the product of the Electric Field and Magnetic field vector of an electromagnetic wave, which gives the electromagnetic power of the wave at the point it is calculated.

Poynting Effect is related to the analogy you gave. It is a thermodynamical concept.

But I never saw poynting "vector" being mentioned as an effect, so maybe these are not confused very frequently.
 

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