There are three new online resources for the engineering and sciences available at Princeton.
PhysicsNetBase - From astrophysics to quantum physics, materials science to optoelectronics, this unified e-library offers fundamental theories and contemporary investigations of time, matter, and space. It includes many volumes from the world-renowned Institute of Physics.
Numerical Recipes - Unlimited on-line access to both Numerical Recipes Electronic (the Numerical Recipes book in electronic format) and Numerical Recipes Code (the machine readable code). You will need to install a plug-in to access this item. Instructions for installing the plug in are found in the "How to get started..." link on the main menu.
Green Energy Portal - From the Department of Energy, this database contains both current and historical research, including bibliographic citations, technical reports and patent information on different types of renewable energy resources and energy conservation. Subject areas include but are not limited to solar, wind, bioenergy, hydroelectric, geothermal, tidal and wave power, and energy storage.

How can I have full free access to Numerical recipes? If I go to their site I can only visualize 30 pages per month. Can the library provide full access for me through my Tiger card?
I am a postdoc in the Physics Depertment.
Thanks,
Enrico
You can access Princeton's subscription to Numerical Recipes using the following link: http://www.nrbook.com/institutional
The subscription gives you access to the full text online and code downloads. Look for "Welcome, Princeton University" to be sure you have authenticated.