Anyone knows what this means? Something to do with Thermodynamics?

[Raziel2701]

http://i.imgur.com/G36U3.jpg

It's been posted in an obscure corner of the physics department forever and I think it'd be nice to know what the heck this is all about.

Thanks!

 

[DrewD]

Enthalpy and Gibbs free energy. The first one is the internal energy plus the energy necessary to displace a rabbit's volume worth of air. Gibbs free energy then subtracts from that the heat that will flow into the rabbit from he environment. The idea is that a wizard would require this amount of energy to create a bunny out of thin air.

 

[jtbell]

It's a composite of two figures from Schroeder's Introduction to Thermal Physics: Figure 1.15 on page 33, and Figure 5.1 on page 150.

 

[Raziel2701]

Thank you both. That's a really good way of quickly remembering what those energies can do.