The digital bookcase operates with the latest technology and has an infinite 3D helix.
" The books are organized into 28 subjects. To choose a subject, click the subject button near the top of your screen when viewing the bookcase. The camera then flies to that subject. Clicking on a book pulls it off the shelf and brings it to the front and center of the screen. Click on the high-resolution cover and the book will open to a page with title and author information as well as a short synopsis, provided by the Google Books API. All of the visuals are rendered with WebGL, a technology in Google Chrome and other modern browsers that enables fast, hardware-accelerated 3D graphics right in the browser, without the need for a plug-in. " taken from Official Google BlogHere is a video to learn more about the digital bookcase
You can also read Google's original article to learn more
Designing an Infinite Digital Bookcase