When changing a file with the class
\documentclass[a4paper,12pt]{extbook}
to
\documentclass[a4paper,10pt]{extbook}
I noticed that \normalsize
parts are only about 9% smaller than before, while I expected 20%. The length of sentences also decreases only by 9%. I use the standard CM fonts. This appears to contradict the actual font sizes listed at
http://en.wikibooks.org/wiki/LaTeX/Fonts#Sizing_text
Can anyone please enlighten me as what is going on?
\normalsize
is .85.