# Two Dimensional Heat?

1. May 5, 2004

### Olias

How does HEAT, get transfered form one location to another in only a two-dimensional field?

If we define the Cold Vacuum of space as a field background(I believe current models define Einsteins field Eqautions as being Vacua dominant), just how does thermal Heat move across Space?

2. May 5, 2004

### Integral

Staff Emeritus
Heat conduction in materials is governed by the heat equation:

$$u_t = u_{xx}+u_{yy}$$

In free space or even still air the main mechanism for heat transfer is Radiation. Seems to me that the energy goes like

$$E= \sigma \Delta T^4$$

here $$\sigma$$ is the Stephan Boltzmann constant.

Last edited: May 5, 2004