Reply to post: Re: JeffyPoooh: The explanation of interference is slightly wrong in the article...

Boffins' gravitational wave detection hat trick blows open astronomy

LastGasp

Re: JeffyPoooh: The explanation of interference is slightly wrong in the article...

> So... How come the laser beam itself isn't shrunk and stretched in precise lock-step with the 4-km long tunnel?

Thank you! That's exactly what's been confusing me. Can anyone please point out the no doubt obvious explanation for this?

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