Theoretical temperature rise is NUMBER@1 = NUMBER@2 · Rc -LRB- k-1 -RRB- / k , with NUMBER@2 and NUMBER@1 in degrees PERSON@1 or kelvin , and k = ratio of specific heats -LRB- approximately NUMBER@3 for air -RRB- .

Theoretical temperature rise is NUMBER@1 = NUMBER@2 · Rc -LRB- -LRB- k-1 -RRB- / k -RRB- -RRB- , with NUMBER@2 and NUMBER@1 in degrees PERSON@1 or kelvins , and k = ratio of specific heats -LRB- approximately NUMBER@3 for air -RRB- .
