An Interactive “Powers of Ten”

Back around 1990, Philip Morrison published a wonderful book called, Powers of Ten. Powers of Ten explored numeric order of magnitude changes in size and scale of real world objects. It served to illustrate society’s general state of numeracy (or lack thereof). Today Liza Krug passed to me a web site created by NASA that boils down to an interactive “Powers of Ten” book where one can move a slider to see order of magnitude changes. Check it out:

Astronomy Picture of the Day, 2014-01-12
http://apod.nasa.gov/apod/ap140112.html