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How come yelling on a mountain can start an avalanche? asks reader Paul Grinde. Scream and bring down a roaring cascade of snow? It seems plausible, especially since a single person skiing in the wrong place can trigger an avalanche above. But researchers say that a human voice doesn’t have the power to move mass [...] How come it’s so hard to break a piece of dry spaghetti in two? Why does it break into more pieces? Also, when you slurp up a strand of cooked spaghetti, why does the pasta sauce fly off? asks a reader. Spaghetti cooking Before you is a pile of dry spaghetti. Your job, should [...] |
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