Ok, so say I have a system at a global temperature, I add an energy source (laser in this case) and it heats the system in a localized area. This leads to a maximum temperature peak in the system. Then you can get out a change in temperature from this maximum to the global. OK, now my question is say in increase the global temperature and keep the power source the same, would I expect to find the delta temperature to be the same for small global temperatures, or would I expect to find that the change from global to max is greater when the global temperature is greater. Hopefully that made some sort of sense.