Definition: Oculus, Perfect Number, Rotunda, Scoria, Porphyry, Groundmass, Aphanitic

THE PERFECT number… and some architectural features found in the Pantheon.



A round or eye-like opening or design


Perfect number

A whole number whose summed factors equal it (6,28,496,8128)



Any building with a circular ground plan, and sometimes covered by a dome



A low-density, lightweight volcanic rock



The compact, finer-grained material in which the crystals are embedded in a porphyritic rock (groundmass also called matrix)



Fine grained



An igneous rock consisting of large-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate rich, generally aphanitic matrix or groundmass


Why Has NFL Football Remain America’s #1 Sport?

On this biggest sports day of the year, the Super Bowl, I pondered why NFL football remains America’s #1 sport.

NFL football became America’s #1 sport through a variety of complex, interwoven and additive reasons as analyzed here in the Bleacher Report. The reasons why it has remained so, and only widened the gap, are a little different, in my opinion. The latest survey from Harris for ESPN shows some interesting demographic divides among the popular sports, though, but it’s not these demographics I’m looking at, rather the overall results. Finally, I have to be clear that #1 is for watching and interest, not participation. That belongs to soccer, probably for its ease to be able to play without huge costs for gear and facilities to play in.

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