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Modern experiments have repeatedly confirmed this discovery.
現代實驗已一再證實這項發現
The speed of light remains fixed regardless of the direction in which it is traveling.
無論光線往任何方向行進 光速永遠維持不變
Michelson and Morley were deeply embarrassed.
邁克爾孫和莫雷極尷尬地
about having to report they being wrong. The ether simply wasn't there.
承認錯誤 以太根本就不存在
But the experiment wasn't a total disaster.
但這項實驗非但不算一無可取
It's one of the most important mistakes in the history of science.
反而成為科學史上極重要的重大錯誤
Light is a wave that travels through nothing. What a strange idea.
光的行進完全不需介質 這個概念真是怪異
And the discovery that the speed can not be varied,is also very odd.
而光速恒定不變的這項發現 也非常奇特
Likely,we physicists like strange things.
幸好物理學家都喜歡怪異的事物
because it often leads to breakthroughs.
因為這種事常有助于獲得突破
And this discovery led to the biggest breakthrough of all:
這項發現有助于取得最重大的突破
The discovery that the speed of light is fixed.
光速恒定不變的這項發現
Would challenge everything we scientists believed about the universe.
會改變科學家對宇宙的所有認知
It would take another of my heroes,Albert Einstein.
這得請我的另一位英雄愛因斯坦
to discover the deep truth about the nature of light.
才能發現光本質的深奧真相
To explain how he did it,let me take you back to my childhood.
為了解釋他是如何辦到的 我帶大家回到我的童年
