August 10, 2018 Volume 24, Number 32 |
Research and Education |
General Interest |
Network Tools |
Revisited |
In the News |
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General InterestBack to Top | |
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What if the Earth Turned into Blueberries? | |
Blueberry Earth: The Delicious Thought Experiment That's Roiling Planetary Scientists The Disturbing Fate of a Planet Made of Blueberries What Would Happen if All Matter on the Earth Was Replaced by Blueberries? Blueberry Earth What If? Exploratorium: Science Snacks At the end of July 2018, an intriguing scientific question arose on the Physics StackExchange forums: what if the entire planet were suddenly "replaced with an equal volume of closely packed, but uncompressed blueberries"? The question immediately caught the attention of Anders Sandberg, a senior research fellow at the University of Oxford's Future of Humanity Institute, but before he was able to answer it, a moderator closed down the question. Undeterred, Sandberg proceeded to give the question its due, performing the necessary physics calculations and writing a scientific paper where he explains "[t]he result is that blueberry earth will turn into a roaring ocean of boiling jam, with the geysers of released air and steam likely ejecting at least a few berries into orbit." He then made his study publicly available on the preprint repository arxiv.org, and he also intends to submit it to a physics education journal. In explaining his motivations for doing this, Sandberg said, "If you think about physics, many of the best results have come from seemingly frivolous questions. [...] In many cases these thought experiments are leading us to interesting places. Or, at the very least, they allow us to test how well our theory works." [JDC] The first two links take readers to articles by Sarah Zhang at The Atlantic and Sarah Laskow at Atlas Obscura summarizing Sandberg's study. At the third link, readers will find an interview with Sandberg conducted by Dan Kois for Slate. The fourth link leads to the full text of "Blueberry Earth," the physics paper that Sandberg wrote in response to the imaginative question. Those interested in seeing scientific treatments of similar questions will find them (accompanied by many illustrations) at the fifth link, the What If? series by Randall Munroe, author of the webcomic xkcd. Finally, the last link takes readers to Exploratorium's Science Snacks, where educators and parents will find many inspiring activities (including some edible ones) to help get kids interested in science. |