Changes between Version 11 and Version 12 of u/erica/radtimescales

Timestamp:

03/30/16 13:30:02 (9 years ago)

Author:

Erica Kaminski

Comment:

—

u/erica/radtimescales

@@ -1 +1 @@
 '''Diffusion time estimate'''
+
+This is an estimate for how long it should take radiation to diffuse through gas. The longer this timescale, the more confined the radiation is -- and thus, the more it can act as a source of heating. 
 
 Starting from:
@@ -52 +54 @@
 or 57 days.   
 
+''' Coupling time estimate '''
+
+This timescale provides an estimate for how long it should take the to 'heat up' (or cool down) from radiation (right?). This is controlled by the planck opacity, [[latex($\kappa_P$)]]. For low [[latex($\kappa_P$)]], the matter and radiation are relatively decoupled. Adjusting the degree of coupling is akin to adjusting the specific heat capacity of the material (right?).
+
+Starting from,
+
+[[latex($\frac{dE}{dt} = {\kappa_P\rho}(4\pi B - cE)$)]]
+
+we have:
+
+
+
+
+
+