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(Solved): An infinitesimal surface dA, located in the center of a Unit semi-sphere (radio R=1) emits diffusel ...




An infinitesimal surface dA, located in the center of a
Unit semi-sphere (radio R=1) emits diffusely with an intensity of
Rad
An infinitesimal surface dA, located in the center of a Unit semi-sphere (radio R=1) emits diffusely with an intensity of Radiation le = 50000 W.m^-2*srad^-1. According to Figure 1, A) Calculate the solid angle that subtends a spherical cap (Fig. 1a) and A spherical segment (Fig. 1b), seen from dA. In this case, the angle 01 = ?/5 (applies to both the cap and the segment, see Fig 1) and 02 = 0.3 T B) Calculate the heat flow per unit of emitting area (q") that is received by Both surfaces. 01. 0? dA dA (a) Casquete esférico. Vista isométrica. (b) Segmento esférico. Vista isométrica. R R R 0?0 0 -1 0 (c) Casquete esférico. Elevación. (d) Segmento esférico. Elevación. 0?


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