Figure 3

Figure 3.  Cosmic energy density between 0.1 m m and 2mm wavelength. The various upward pointing arrows indicate counts of point sources, while the heavy solid and dashed lines show the results of large beam measurements and models that measure or predict the true absolute sky brightness. This plot and subsequent ones in the report are in vFv or similar units, so a horizontal line represents constant energy per logarithmic frequency or wavelength interval.