Effect of specular reflexions on the radiation flux from a heated tube

Abstract

In my communication under the above title there appears an error in expression (7) for F_L". The expression should read: F_L" = σT⁴∑^∞_T=0ε³(1 - ε)^r∫^∞_Lμ(h/r+1)dh = σT⁴∑^∞_T=0ε³(1 - ε)^r(1 + r) ξ(L/r + 1) Taking the radiation from a black surface as reference, one can then show that the deficit from it of the flux of radiation from the mouth of a uniformly heated cylinder of length L, closed at the other end, is (1 - ε) times the corresponding deficit for the flux from the mouth of a cylinder of same diameter and of length 2L, but open at both ends.