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[時差N小時] 時差N小時:箱子底部的玉米薄片為什么不會被壓碎(上)
Why don’t the cornflakes at the bottom of the box get crushed by the weight of the flakes on top? That’s the question on this Moment of Science. Research by mathematician Bruce Pitman of2011-12-07 編輯：beck
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[時差N小時] 時差N小時:走路時為什么要甩胳膊?(下)
But although it happens passively, arm swinging plays an important role in making your stride more efficient. It does this by counterbalancing your torso and hips and keeping them from twisting and b2011-12-05 編輯：beck
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[時差N小時] 時差N小時:走路時為什么要甩胳膊？(上)
你想過為什么走路時我們要甩胳膊嗎？這是很有趣的現象，因為胳膊在走路時并沒有明顯的作用。2011-12-02 編輯：beck
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[時差N小時] 時差N小時:藍鯨是天生的歌唱家(下)
Wow! That is nearly ten times greater than the difference observed in the whales. Pretty amazing, right? But, why are they such pitch perfectionists? Well, one hypothesis has to do with the Doppler s2011-12-01 編輯：beck
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[時差N小時] 時差N小時:藍鯨是天生的歌唱家(上)
Did you know that blue whales sing their songs exactly on pitch, with unbelievable accuracy? Scientists at San Francisco State University analyzed over 4,000 blue whale songs off the coast of Califor2011-11-30 編輯：beck
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[時差N小時] 時差N小時:外婆擔心外孫被寵壞(下)
Dear Grandma:[qh]祖母你好：[qh]Your daughter's parenting skills could use some improvement, and yes, it's possible those kids will grow up to be overweight, undereducated crooks, but she need2011-11-29 編輯：beck
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[時差N小時] 時差N小時:外婆擔心外孫被寵壞(上)
Dear Annie:[qh]Annie你好:[qh]My daughter allows her 8-year-old son to stay up late at night, watch adult TV and eat lots of sweets. She strongly resents any suggestion that this is not a good thing.[2011-11-28 編輯：beck
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[時差N小時] 時差N小時:哪一個先落地?(下)
Why not? You cry.Well,ask yourself this question: which one is easier to move in the first place? The golf ball. So it takes more force to move the bowling ball. And the bowling ball is also the one2011-11-25 編輯：beck
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[時差N小時] 時差N小時:哪一個先落地?(上)
這是一個物理學的經典：設想你從帝國大廈上同時丟下一個高爾夫球和一個保齡球。那個先著地？2011-11-24 編輯：beck
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