MathBench > Measurement

Logs and pH

Your turn with messy numbers

This time, try to guess the log scale value of some real (biologically important) measurements. Remember, its really not possible to calculate the logs exactly (not for very messy numbers, anyway, and those are the numbers we care about in science). You're just trying to get an intuitive "feel" for how logs correspond to numbers in the real world...

diameter of an E. coli bacterium
E. coli
log(0.000002) =


very close!
pretty close ...
not so close