Wien’s law :
         peak = 0.289 / T(K) cm
 peak color: hotter bluer (shorter )
                       cooler redder (longer )
Greater total energy (summed over all
wavelengths) radiated by hotter objects
                             
Stefan’s Law :
energy radiated/unit area of B-B
surface/unit time (temp)4
                       F = T4
  Flux  = 5.67x 10-8T4 watt/m2/K4
Stefan’s constant =