http://www.youtube.com/watch?v=bfBb8-oY0xg
https://www.google.com/search?q=archimedes&hl=en&prmd=imvnsb&tbm=isch&tbo=u&source=univ&sa=X&ei=ybJzT-rDF8ScgQejjJVM&sqi=2&ved=0CEkQsAQ&biw=1366&bih=681
http://www.notablebiographies.com/An-Ba/Archimedes.html#b
http://www.historyking.com/Ancient-Greece/Archimedes/Archimedes-Timeline.html
https://www.cs.drexel.edu/~crorres/Archimedes/contents.html
https://www.cs.drexel.edu/~crorres/Archimedes/contents.html
http://www.pbs.org/wgbh/nova/archimedes/lrk_biography.html
http://en.wikipedia.org/wiki/Buoyancy
http://www.grc.nasa.gov/WWW/k-12/WindTunnel/Activities/buoy_Archimedes.html
http://scienceworld.wolfram.com/biography/Archimedes.html
http://www.science-niblets.org/physics/why-can-heavy-steel-ships-float.html
http://www.bolsovercruiseclub.com/cruise-infographics/why-do-ships-float/#.VW2wWGakd4q
http://hyperphysics.phy-astr.gsu.edu/hbase/pbuoy.html
https://www.google.com/search?q=archimedes&hl=en&prmd=imvnsb&tbm=isch&tbo=u&source=univ&sa=X&ei=ybJzT-rDF8ScgQejjJVM&sqi=2&ved=0CEkQsAQ&biw=1366&bih=681
http://www.notablebiographies.com/An-Ba/Archimedes.html#b
http://www.historyking.com/Ancient-Greece/Archimedes/Archimedes-Timeline.html
https://www.cs.drexel.edu/~crorres/Archimedes/contents.html
https://www.cs.drexel.edu/~crorres/Archimedes/contents.html
http://www.pbs.org/wgbh/nova/archimedes/lrk_biography.html
http://en.wikipedia.org/wiki/Buoyancy
http://www.grc.nasa.gov/WWW/k-12/WindTunnel/Activities/buoy_Archimedes.html
http://scienceworld.wolfram.com/biography/Archimedes.html
http://www.science-niblets.org/physics/why-can-heavy-steel-ships-float.html
http://www.bolsovercruiseclub.com/cruise-infographics/why-do-ships-float/#.VW2wWGakd4q
http://hyperphysics.phy-astr.gsu.edu/hbase/pbuoy.html