Dating physical appearance

10 Jul

Imagine that a new restaurant opens in your neighborhood featuring cuisine you’ve always wanted to try. The first thing you notice as you approach the place is that all the windows are smudged and dusty.Stepping inside, you’re greeted by a hostess wearing no makeup, whose hair looks like a windblown haystack. You’ll seek out someplace better tended—as well you should!

dating physical appearance-67

However, on the whole, he thought that these sources were not adequate to account for anything more than a small faction of the heat lost by the Earth.

Chamberlain (1899) pointed out that Kelvin's calculations were only as good as the assumptions on which they were based.

"The fascinating impressiveness of rigorous mathematical analyses, with its atmosphere of precision and elegance, should not blind us to the defects of the premises that condition the whole process.

Based on these assumptions he at first suggested an age of the Earth of between 100 Ma and 500 Ma.

This estimate was actually reduced over his lifetime to between 20 Ma and 40 Ma and eventually to less than 10 Ma. Perry, in particular, a noted physicists and former assistant to Kelvin, showed that cooling calculations using different but equally likely assumptions and data resulted in ages for the Earth of as much as 29 Ga.