Consider the parallel planes of infinite extent normal to the page having opposite edges. The planes are in the environment of Teny = 300 K as shown Using appropriate view factor relations and the result for opposing parallel planes, develop an expression for the view factor, F-2 Using the cross-string technique to determine the view factor, F-2 Calculate temperature T 2 m (2), T= 2000 K 1 m (env), Teny = 300 K 2 m (1), T