A double rainbow is a phenomenon in which two rainbows appear.
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Roomba is a series of autonomous robotic vacuum cleaners. Under normal house conditions, the Roomba is able to autonomously vacuum the floor while navigating and avoiding obstacles. Some artists have even taken the idea a step further, using multiple roombas in a single room or affixing various colored LEDs to the Roomba to garner a multitude of results. And with no two Roomba paths being the same, the possibilities are endless.
Pictures by Dr. William Podlich.
Smithsonian Magazine’s 10th Annual Photo Contest has just announced the 50 finalists for this year’s competition. The contest received over 37,600 photo submissions from photographers in 112 countries around the world. The five contest categories this...