# Gnuplot script showing blackbody radiant exitance # for temperatures from -30 to 30 degC. # Trivial script by Jan Hollan, 2013 #set encoding iso_8859_1 #set term png set out "stef_boltz.eps" set term postscript eps color enhanced set size 0.7 set grid sigma = 5.67e-8 sfb(x) = sigma * (x+273.15)**4 set title "Blackbody radiation" set ylabel "Radiant exitance / (W.m^{/*0.7 -2})" set xlabel "Celsius temperature / 1 K" plot [-30:40] sfb(x) lw 3 title '' quit