大意:科學家利用google earth的衛星照片,發現牛傾向指向南北方




Cows Tend to Face North-South

Don't be fooled by those big bovine eyes and the mouth slowly chewing cud—cows have a magnetic personality. At least that's the claim made by German researchers in the August 26th issue of the Proceedings of the National Academy of Sciences. Using Google Earth images, the scientists looked down on over 8,000 cattle around the world. And, when grazing or resting, cows tended to face either magnetic north or south.

The researchers combined field observations with the satellite data and discovered that herds of both deer and cattle tend to align themselves north-south. Factors like wind and the angle of the sun had little bearing on how the animals stood. More often than not, like needles of a compass, heads swiveled northward. While it's been known that birds, bees and fish use the earth's magnetic fields for orientation, this study is the first to point to a magnetic sense in large mammals. The scientists speculate that this behavior may allow the animals to stay spatially oriented. In case danger lurks and a cow needs to make any sudden…moos.







cud n.反芻的食物


have bearing on v phr.與什麼有關

swivel
  v.旋轉  n.轉環




spatially adv.空間上的
=space + ial(形容尾) +ly
(副詞尾)



 

創作者介紹
創作者 xination 的頭像
xination

倫倫的小blog

xination 發表在 痞客邦 留言(0) 人氣()