Wolfram Alpha is a search engine which serves up formatted answers to questions rather than provide just a list of links.
What is it? Wolfram Alpha is a "computational knowledge engine", and is the brainchild of Stephen Wolfram, the founder of Wolfram Research, whose most well-known product to date is Mathematica, a computational application that is used by mathematicians, scientists and other technicians.
Wolfram Alpha's mission is to go beyond simply finding and listing links to websites, and instead to pull the needed data from those sites and provide users with the answers to their questions. In other words, it will travel through websites so you don't have to.
What does it do? Wolfram Alpha gathers data based on your search terms and presents you with the answers in a well-formatted structure, using charts, graphs and other visual aids. For example, if you want to compare statistics about several different cities, you type in their names and find out that, say, Tokyo has several thousand more people than New York.
What's cool about it? If you're of a scientific bent, Wolfram Alpha could be a great resource, once Wolfram Research beefs up its informational sources. It lays out the data in easy-to-read, well-formatted pages that include a variety of charts and graphs.
For example, when we typed in "Hubble," it came up with some interesting facts about the Hubble Space Telescope, including its current position and original launch date. Typing in "ISDN" brought up various comparative speeds and the time needed to transfer 100 kilobytes of data. And typing in "Cheerios" got me more information than I needed to know about the cereal's nutritional components.
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