- #1

physicsnoobie79

- 14

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- TL;DR Summary
- If LIGO measures the warping of space, doesn't the warping of time compensate this so it cannot be measured?

I'm just a layperson with a keen interest a couple of notches above popular science.

As far as I understand SpaceTime is an attribute where if you change one attribute (space or time) then the other attribute is affected. E.g. as you approach the speed of light, the time passing of other things will be being to slow down. To the point where once you're at the speed of light, the time of other things will stop.

So, with the LIGO experiment, it uses lasers to measure the ripples from gravitational waves. These ripples stretch/contract space which can be measured by the lasers.

So my question is this, if space is being warped by gravitational waves and that is being measured by lasers, doesn't the related time warping it causes also affect the measurements taken such that it cancels out anyway we can measure this?

For example, if the distance between the two LIGO sensors is increased then this distance can be measured but if the time in that area is slowed, then the time taken for the measure will also increase and thus 100% cancel out the increased distance?

Maybe I've got things completely wrong or I've got my wires crossed. And maybe this might be beyond my comprehension. However, I'm still keen on trying to understand this.

Thanks in advance.

As far as I understand SpaceTime is an attribute where if you change one attribute (space or time) then the other attribute is affected. E.g. as you approach the speed of light, the time passing of other things will be being to slow down. To the point where once you're at the speed of light, the time of other things will stop.

So, with the LIGO experiment, it uses lasers to measure the ripples from gravitational waves. These ripples stretch/contract space which can be measured by the lasers.

So my question is this, if space is being warped by gravitational waves and that is being measured by lasers, doesn't the related time warping it causes also affect the measurements taken such that it cancels out anyway we can measure this?

For example, if the distance between the two LIGO sensors is increased then this distance can be measured but if the time in that area is slowed, then the time taken for the measure will also increase and thus 100% cancel out the increased distance?

Maybe I've got things completely wrong or I've got my wires crossed. And maybe this might be beyond my comprehension. However, I'm still keen on trying to understand this.

Thanks in advance.