free downloadable science books

[smallphi]

http://freescience.info/index.php

some of the books are really good

[Fizix]

Here are a few more for math, science, and CS:

http://homepages.nyu.edu/~jmg336/html/mathematics.html
http://www.math.gatech.edu/~cain/textbooks/onlinebooks.html
http://dmoz.org/Science/Math/Publications/Online_Texts/

[torstum]

You'll find lots of great, classic textbooks from this archive:

http://www.archive.org/details/texts

They seem to have their copyrights expired, due to the age of original publication, so I think they are all legal. Still very useful for most purposes.

[Moonbear]

When posting links in this thread, please ensure that only LEGALLY available downloads are included on the site. If a site doesn't have an explicit statement regarding copyright policy on the books offered (i.e., permission from the publisher to read but not redistribute, or only offering books that are old enough to be out of copyright, or have been made available with permission from the publisher/author), we're going to take the cautious approach of deleting the link.

[hamamo]

nice topic
also i recommended this
www.motionmountain.net
download a very nice text(pdf format) in physics and math with history