课程咨询
扫码关注掌握一手留学资讯

扫码关注掌握一手留学资讯

回复XDF免费领

水平测试和备考资料

扫码关注公众号

GRE双语阅读材料:鸟类磁性感知能力新发现

2018-04-12 14:54:00来源:网络

  在伊利诺斯大学香槟分校工作。据Schulten,这种他物是一种名为cryptochrome的尿视黄醇蛋白。

  When hit by light, a cryptochrome produces pairs of molecules called free radicals that are electrically neutral but have unpaired electrons in them.

  当受到光照时,就产生名为自由基的分子对。这种自由基呈电中性,其中含有未配对电子。

  Electrons are tiny magnets, so they tend to attract each other and pair up in a way that neutralises their joint magnetic fields.

  电子就是微小的磁性体。因此,当它们的联合磁场中合之时,电子就会相互吸引,就会形成组对。

  Unpaired electrons, however, remain magnetic, and thus sensitive to the Earth's field.

  但是,那些不成对电子仍具磁性,对地球磁场很敏感。

  Moreover, because the unpaired electrons in the free radicals were originally paired in the molecule that split to form the radicals, quantum mechanics dictates that these electrons remain entangled.

  因为自由基中的那些不成对电子最初存在于分裂成为自由基分子之中,量子力学规定这些电子依然是绞缠的。

  This means that however far apart they move, what happens to one affects the other's behaviour.

  也就是说,无论双方离得有多远,一方的行为会影响另一方。

  Calculations suggest the different ways the two radicals feel the Earth's field as they separate is enough to change the way they will react with other chemicals—including ones that trigger nerve impulses, and that, via entanglement, they can transmit this information to each other, and thus affect each other's reactions.

  此种假设表明,当两种自由基分离时,它们感知地球磁场的相反作用足够能够改变它们与其它化学物质相互反应的方式――包括那些能产生神经脉冲的化学物质。同时,通过绞缠,它们彼此能互相信息,从而产生相互影响。

  This, the calculations indicate, would be enough for a bird's brain to interpret the magnetic field.

  此种假设表明,这足可以让鸟脑识别磁场。

  It would probably see a pattern of spots before its eyes, which would remain stationary as it scanned its head from side to side.

  鸟眼可能会看到眼前有某种样式的斑点图案,当鸟类对其识别之时,眼睛是固定的。

  And some birds do, indeed, scan their heads this way when assessing the direction of magnetic north.

  其实,当鸟类辨别地磁北极之时,确实能够用此法扫描头部。

  It is possible, of course, that both hypotheses are right, and that birds have two magnetic senses, with one perhaps concentrated on north detection and the other on detecting dip.

  当然,两种假说都有正确的可能。鸟类也有可能有两套磁感应能力,一种集中在北方,另一种集中于磁倾角。

  But there is something particularly poetic about the idea that even part of this mysterious sixth sense depends on a still-more-mysterious quantum effect—one that Einstein himself described as spooky action at a distance.

  这种神秘的第六感觉依赖于更加神秘的量子力学效应。对此还有一种诗意般的解释,即爱因斯坦自己说的鬼魅般的超距作用。

本文关键字: GRE双语阅读 GRE阅读 GRE

添加新东方美研助教回复【GRE】获取

模考真题|写作题库|阅读机经|佛脚词汇

更多资料
更多>>
更多内容

关注新东方美研助教

回复【GRE】获取备考必看资料包

新东方美研备考资料
GRE录播课(全科班/单项班) GMAT6-8人直播VIP小班 托福直播精讲班(30天/60天)
更多>>
更多惊喜>>
更多>>
更多资料