I am running a program that calculates heat dissipation of heat copper sphere and I need to run the calculations until the temperature of the sphere is within .1, that is either +.1 or -.1 of a set safe temperature. I have no problems getting my program to loop to find the correct temperature values. I just can't seem to find the correct test to get the loop to stop. If you have any suggestions please let me know. I uploaded the file