Printable versions of the online essays are available here for download as Adobe Acrobat® (PDF) files. These files are each less than 60K in size. If you need the Acrobat Reader, you can download a free copy from the Adobe website. Synchrotron Radiation: The Most Versatile Spectroscopic Source G. Michael Bancroft [ Download PDF file ]     [ Return to the online essay ] From E-Mail to Virtual Reality: The Role of Technology in Supporting Learning Tom Calvert [ Download PDF file ]     [ Return to the online essay ] Shaping a Visual Language for our Times Sean Caulfield [ Download PDF file ]     [ Return to the online essay ] From Femtoseconds to Attoseconds Paul Corkum [ Download PDF file ]     [ Return to the online essay ] Reconstructing/Deconstructing the Tree of Life W. Ford Doolittle [ Download PDF file ]     [ Return to the online essay ] Managing Change by Changing Managing Francis Hartman [ Download PDF file ]     [ Return to the online essay ] Convergence, Interactive Media, and Innovation Michael J. Murphy [ Download PDF file ]     [ Return to the online essay ] Excitable Tissues and Virtual Worlds: Art, Science, and Technology Catherine Richards [ Download PDF file ]     [ Return to the online essay ]