Remember high school, learning the periodic tables first 20 elements? HHeLiBeBCNOF – NeNaMgAlSiPS – ClArKCa? And wondering what everybody is talking about when they say “Web 2.0 applications”? Well here is one really cool one, especially if you select a property and start fiddling with the slider.

Periodic Table

Added: Sorry, I forgot the link, please retry.