[QUOTE]Originally posted by Joe Meert:
[B]1)JM:Average age; however, it falls out of the integration; note the 1/tau term outside the integral will factor into the integration because the integration is done from 0 to tau.
2)JM: kappa=K/pc ....It has units of length^2/time, but the K (thermal conductivity) tells you its related to how far/fast heat diffuses. Does that help? It is not a constant (hint: this is a term that will cause TC fits when he starts to model).
[B][/QUOTE]
1)Sorry I`m still not getting how t is average age instead of tau....
Could you work through a brief example for me please?
2)Hmmm k[Kg.m/K.s
3] so to end up with Kappa [m
2/s] pc needs units [Kg/K.m.s
2]...
Ok i`ll bite Joe what is pc?