Even if you disregard how amazing this is, this quote blows my proverbial mind:

*The test rig is carefully designed to remove any possible sources of error. Even the lapping of waves in the Gulf of Mexico 25 miles away every three to four seconds would have showed up on the sensors, so the apparatus was floated pneumatically to avoid any influence. The apparatus is completely sealed, with power and signals going through liquid metal contacts to prevent any force being transmitted through cables.*