Sometimes it's nice to have a paper version of the periodic table of the elements that you can refer to when working problems or doing experiments in the lab. This is a collection of periodic tables that you can print and use.
Parallel Wallpaper: The contrast between the sharp angles and soft pastel colors in Rumiko Matsumoto's design Parallel Worlds makes for such an interesting pattern.#iphonebackground #ios7
Wallpaper iPhone 5 - Find more with positive messages at Wallgapers.com
Wallpapers for iPhone 5 - Find a Wallpaper, Background or Lock Screen for your iPhone here