![Professor Thom Castonguay at the University of Maryland shows off his bomb calorimeter. <strong>Scroll down to read more about the science of calorie measurement.</strong>](https://npr.brightspotcdn.com/dims4/default/c4d194b/2147483647/strip/true/crop/200x240+0+0/resize/880x1056!/quality/90/?url=https%3A%2F%2Fmedia.npr.org%2Fnews%2Fimages%2F2006%2Fdec%2F30%2Ffruitcake240-0293aee6bf6abcc860c4670a9182023b0450c8d9.jpg)
Not sure what to do with Grandma's leftover fruitcake?
Professor Thom Castonguay has an idea. As part of our Science out of the Box series, we visit a lab at the University of Maryland's Department of Nutrition and Food Science, where Castonguay demonstrates bomb calorimetry -- the science of calculating calories by blowing up food.
A bomb calorimeter is designed to contain miniature food explosions and measure the heat produced by the explosion.
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