But the grit in the pearl for all this was a strange observation made that year by two researchers called Albert Michelson and Edward Morley that the speed of light was constant, no matter how fast the observer was travelling.

然而，白璧微瑕，当年阿尔伯特迈克耳孙（Albert Michelson）和爱德华莫雷（Edward Morley）两人测得一个诡异的实验结果，即光速在不同的参考系中是一样的。

In 1887 Albert Michelson (who later became the first American to receive the Nobel Prize for physics) and Edward Morley carried out a very careful experiment at the Case School of Applied Science in Cleveland.

1887 年，阿尔伯特·迈克尔逊（后来成为第一个获得诺贝尔物理学奖的美国人）和爱德华·莫利在克利夫兰的凯斯应用科学学院进行了一项非常仔细的实验​​。