Measuring gravitational waves by measuring distances with light waves, what the LIGO project was built on raises questions as it was disc...
Measuring gravitational waves by measuring distances with light waves, what the LIGO project was built on raises questions as it was discussed in earlier thought.
Are there other methods to measure gravitational waves, to measure the distortion of the space, the distortion of the thing that we are on it, what we are part of it?
The best method would be to measure gravitational waves to use a measuring tool, which is outside of our space, and this way, unchanging by the effects of the gravitational waves. It is hard to find that kind of meter. The lightwave, which is used in LIGO are obviously not outside of the space.
Another possible tool is which does not distort by the distortion of the space. It does not look easier to find, because we want to find something, which is unaffected or at least has resistance against the space distortion. However, we may have such kind of tools.
Everything that exists in the universe exists on the space. Not in it but on it. Like a picture, drawn on a rubber sheet. If the rubber is stretched, the picture becomes distorted, as well. To detect the distortion, we need an undistorted or a differently distorting viewpoint. Do we have such a place or equipment? Maybe we have.
According to current physics, local forces can resist the expansion of the space. We see the expanding universe as the expansion of the space, yet we are not expanding with it. Otherwise, we could not measure the expansion. Our local forces, like electromagnetic interaction or even gravity, can withhold the inflation of the space. If the local forces are able to create non-distorting structures in space inflation, they may have resistance to the distortion of the space caused by gravity as well.
It is confusing when we consider gravity as a force of resistance because gravity is the force that distorts space. However, the confusion can be clarified if we differentiate space distortion caused by gravity and caused by the space, itself. Space can distort itself (dark energy), and gravity can withhold that distortion.
There are structures, which are able to withhold themselves from space distortion.
LIGO can measure the gravitational waves, the space distortion caused by gravitational waves. However the reason and the method why and how is not because the channel, where the laser light goes, changes its size of the effect of the gravitational waves, and the light waves inside the channels do not. Instead of the opposite reason. The length of the channel, because its wall is a solid object kept together by local electromagnetic force, won't change its dimension, or at least may have some kind of resistance to the effect of the gravitational waves. The gravitational waves, however, affect the light waves, which have no internal, local force to keep its dimensionality. The light waves change, and the channels are not, or at least not in the same manner.
However, to measure gravitational waves in this way, the channel, with the reflecting mirrors, should be one solid object. In the LIGO case, the mirrors are not attached solidly to the walls of the channel to reduce the effect of the ambient vibration. Because of that, the two reflecting mirrors are not connected to each other solidly, and this way, by the electromagnetic force. So the space distortion, caused by the gravitational waves, and the dimension change between the two mirrors are indistinguishable effects, do not create a measurable difference.
However, the solid channels with solidly attached mirrors measuring method may work to sense gravitational waves but must be on a place where no ambient vibration is present. In the space outside of the Earth.
Can the electromagnetic force restrain against the gravitational waves, which cause space distortion? Obviously not. However, some level of resistance may be present. Because two forces have thirty-four magnitude differences, extremely difficult to measure the resistance, which even creates a bigger magnitude difference in the effect. To observe this effect need an even more sensitive, solid, heat-insulated equipment outside of the Earth, than the LIGO.
Moreover, if the local-force resistance exists against the gravitational waves, what effect could it create on the cosmic scale? If the local force resistance exists against the gravitational waves, this resistance must be present against the space expansion itself. That could create an extra, additional effect against the space distortion. Is it the effect that we call dark matter? If it would be true, then dark matter is not a kind of extra, unknown kind of matter at all, rather it is the local force resistance, an effect against the space distortion and expansion.
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