A gravitational wave is so difficult to distinguish from other vibrations that physicists won't believe in a wave's existence unless at least two observatories see the same minuscule shift. (discovermagazine.com)
For the TMT, potential sources of vibrations were located away from the telescope and engineers developed other vibration dampening techniques. (tmt.org)
Still, the more I use the iPhone X it's becoming increasingly noticeable when I pick up another phone and feel just how far behind other vibration motors are. (androidcentral.com)