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Rube Goldberg was an American inventor in the early 20th century. The machines that carry his name execute long mechanical chain reactions to accomplish very simple tasks like lighting a fire cracker.
Yahoo and Bing have honored the United States' Independence Day with special logos too. Yahoo shows a simpler fireworks animation and pitches a Fireworks Finder tool to users. Bing shows buildings form the U.S. capitol and 4th of July factoids.
Google's logo will change by tomorrow, so we've included a picture below for readers who are going to miss out. A still image obviously doesn't do it justice, though, so we've embedded YouTube user rustybrick's video of the animation too. Enjoy!
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