Chopter 8 THERMAL- RADIATION MEASUREMENTS The DOD had no projects exclusively concerned with thermal-radiation measurement and only one, Project 6.2, which was incidentally concerned with such measurements (see Section 1.1). This omission was deliberate, to avoid duplicating the effort planned by Harold Stewart of the Optics Division of the Naval Research Laboratory (NRL) and Herman Hoerlin of LASL-sponsored Program 18. in lieu of such duplication, the DOD provided funds for a slight enlargement in scope of Program 18. Final reports of the thermal-radiation measurements made by Program 18 were being written at the time of publication of this report; they were not in a suitably finalized state to warrant quoting information therefrom with any degree of certainty that such infor ma- tion would remain unchanged when the final reports were published. For these reasons, no final data is reported in thia chapter. The Program 18 final (WT) reports may be consulted when they are available. A brief description of these projects is given in the Appendix. Lol