Logarithmic equations relating aboveground tree, crown, and stem biomass to tree diameter at breast height are given for eight tree species.

In Algebra II, students learn functional notation, the laws of exponents, geometric and arithmetic sequences, factoring, logarithmic equations, mathematical induction, and sum notations.

A systematic bias of the order of 10 to 20% which is inherent in most, if not all, prior uses of the logarithmic equation to estimate plant biomass is noted as is the correction for the bias.

"The End of the Dark Ages," again inspired by the Metropolitan Opera House chandeliers and informed by logarithmic equations devised by the cosmologist David H. Weinberg was shown in New York City in 2008.