PTE Re-tell Lecture 真实讲座练习题:相对论对于物理学家的意义

在PTE中,无论是Summarise Spoken Text 还是 Re-tell Lecture的考题大都是从真实的讲座或者演讲中截取的,中间经常经常夹杂很多不同的环境音.很多同学都反映有时未必是听不懂,而是听不到. 鉴于此,墨尔本文波雅思PTE专门为大家总结了真实讲座的PTE练习音频,相比新闻音频来说,整体更加接近PTE考试的真题,内容方面,我们也会为大家提供考试中存在的近似题,最近我们会持续更新,敬请期待!

Relativity to a physicist means that there are aspects of the world that can only even be defined, only make sense by comparison. Your speed related to me, the rate which time elapses on your watch compared to the rate which time elapses on mine. But the thing that’s really worth emphasizing is that when Einstein developed relativity, he really thought a better name would be variance theory, not relativity theory because at the heart of relativity, it’s finding those things which are rare that don’t require a comparison for their definition, for instance the speed of light is a good example, whether you’re measuring it, whether I’m measuring it, whether anybody’s measuring it, according to relativity as confirmed by experiment, we will always get the same answer, 186,000 miles per second. It’s not a relative notion and that’s surprising, but it’s those invariance, those things don’t change, the Einstein leveraged to understand how other things in the world do change.