The long expected knowledge engine Wolfram Alpha has gone online. In contrast to search engines full question queries can be used with Wolfram Alpha.
Although the engine does not understand language, questions can be entered in normal language. The engine then converts them into mathematical equations and displays what has been found for these questions.
Wolfram Alpha provides answers from several areas of knowledge like mathematics, statistics, chemistry, medical sciences, language, culture and media as graphical diagrams. It is based on Stephen Wolfram’s “Mathematica” and “A New Kind of Science (NKS)“.
[UPDATE] May 16, 2009: There is a Firefox search plug-in now. More information and auto-installation here.
