= P. G. Roll
{c}
Constructed, jointly with a coauthor, a <radiometer> and receiving horn for absolute thermal-radiation measurements at $3\,\mathrm{cm}$. The associated <cosmic microwave background> paper explained the wavelength choice as a compromise between atmospheric absorption and longer-wavelength foregrounds; results from this instrument were still pending.<Cosmic Black-Body Radiation by R. H. Dicke and others>[p. 415: apparatus explicitly credited to P. G. R. and D. T. W.; p. 416: results pending]{ref}
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