| 77 | How fast this diffusion takes place depends on [[latex($\kappa_R$)]]. Once E has diffused into the adjacent cells, [[latex($E>B$)]], and so, [[latex($\rho e$)]] will increase in those zones. This leads to an increase in T, and thus, an increase in B. How fast the energy is transferred from the radiation field to the gas depends on [[latex($\kappa_P$)]]. Adjusting the planck opacity can be thought of then as adjusting the specific heat capacity of the gas. A large [[latex($\kappa_P$)]] means the gas can absorb the radiation quickly (and thus the radiation and gas are strongly coupled), and vice versa. |