The Daily Physics Problem - 10, 11, 12
As explained in the first installment of this series, these questions are a warm-up for my younger colleagues, who will in two months have to pass a tough exam to become INFN researchers.
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Pink Penguin Poop Can Be Seen From Space
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How To Stomach A Black Hole
--- repost due to previous version not surviving server maintenance ---
Black holes are hot. Well, thermodynamically these suckers are freaking cold, but they do attract more attention than hot…