"Welcome to the "Periodic Table of Videos". Tables charting the chemical elements have been around since the 19th century - but this modern version will have a short video about each one."(YT subscription) (via kottke)
posted by Kronos_to_Earth on Jul 16, 2008 - 14 comments

"A Hydrogen Atom is only about a ten millionth of a millimeter in diameter, but the proton in the middle is a hundred thousand times smaller, and the electron whizzing around the outside is a thousand times smaller than THAT. The rest of the atom is empty. I tried to picture it, and I couldn't. So I put together this page - and I still can't picture it." Awesome illustration on perspective and particles - *warning* very wide page, may be dangerous to your browser. Also, the relative size of planets (via the always interesting 37signals blog.)
posted by rsanheim on Aug 29, 2006 - 26 comments

Debris. The terminus of ballistic arches. A photo-essay by Jonas Bendiksen of a different kind of space junk: Proton rocket stages peppering the Khazak countryside discarded from Baikonur Cosmodrome launches.
posted by trinarian on Apr 12, 2006 - 17 comments

Feeling small or feeling big? 39 orders of magnitude that take you from the Milky Way to the proton in an oak leaf.
posted by Chief Typist on Jun 20, 2002 - 9 comments