From Fiz. 11.15 it can dbe seen that ebe Light fs exitted from an eflective spoere Tais radius aad a height of Surst of 250,000 veet are used to calculate che irradiance om the ground (1) for black-body eaission, and (2) for esissivities fraa Laws-2453. in Figs, 11.16 ami 11.17 for 5000 A ani 6500 A, respectively, These are shun Exper‘meotal curves shown in chese graphs are obtaised from aeasured {rradiances (Fig. 11.9) and inferred tenperacures (Fig. 11.14). 11.5.2 Orange Measuresents Results of streak records at 3500 A, 5000 A, and 6500 4 are shown in Fig. 12.15. As "befuce, Irepresests irradiance of the fila plane in watts/ca’ a. ay ,veer Sho Wrouegh K S ere deleted. Ws