Over a long period of time, physicists have wondered why the gravitational force is weak compared to other known forces. Although a bunch of physicists have suggested that gravitational force might be weak due to effects of other dimensions on the force. If that’s the case, then finding other dimensions might hold the key to understanding the gravitational force.
Although scientists hoped that signs of other dimensions would eventually occur, they were disappointed as there was no sign of other dimensions beyond the four known dimensions. However, when ripples in the space-time caused by motion of massive object were detected for the first time back in 2015, it gave scientists new hope of identifying any dimension that might exist beyond the ones we already know.
In a recent article published in the New Scientists, Gustavo Lucena Gómez at the Max Planck Institute for Gravitational Physics in Potsdam, Germany talked about the mystery that gravitational force might hold. She said, “If there are extra dimensions in the universe, then gravitational waves can walk along any dimension, even the extra dimensions.”
“If extra dimensions are in our universe, this would stretch or shrink space-time in a different way that standard gravitational waves would never do.”
They also mentioned how other forces might be affecting the gravitational forces. If such dimensions exist and are affecting the gravitational waves, then it might give explanations to another hypothesis called gravitational force. If the dimensions’ effect on the gravitational force is real, then it might add another way for gravitational waves to make space shape-shift, called a breathing mode.
However, we might need to wait a long time to discover other dimensions if they exist. If such discovery indeed happens in future, it would help to explain a number of problems.
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