Sure, sure, we all saw that haunting illustration of a bat’s wings that won first place for informational graphic in Science magazine’s 2007 Science and Engineering Visualization Challenge. And we saw the other winners, too, including the arresting photo of “What’s Behind our Nose?” and that Irish moss, pulled from the sea, that looks like an alien made entirely out of hands and fingers. (Click here to check out the winners’ gallery.)
But I’ve seen little mention of a video that explains, with elegance and simplicity, a nifty utensil from the geometer’s toolbox. (Th
