W do these values compare to 492 billion, the amount actually spent? APP4. S. H. P. Chen and S. C. Saxena report experimental data for the emittance of tungsten as a finction of temperature [Ind. Eng. Chem. Fund. 12, 220 (1973)]. Their data follow. They found that the equation e(T) = 0.02424 303.16 1.27591 correlated the data for all temperatures accurately to three digits. What degree of interpolating poly- nomial is required to match to their correlation at points midway between the tabulated tempera- tures? Discuss the pros and cons of polynomial interpolation in comparison to using their correlation. T, °K 300 400 500 600 700 800 900 1000 1100 e 0.024 0.035 0.046 0.058 0.067 0.083 0.097 0.111 0.125 T, °K 1200 1300 1400 1500 1600 1700 1800 1900 2000 e 0.140 0.155 0.170 0.186 0.202 0.219 0.235 0.252 0.269