In 2010, a defense report took up a hard-to-ignore question: Could an unusual material affect gravity? The review focused on superconductors and claims that they might produce an anomalous effect when spun or supplied with electricity.
A superconductor is a material that allows electricity to flow without resistance. The report examined studies looking for a connection between superconductors and gravity, as well as ideas linking them to gravitational waves and propulsion. If such an effect were proven, the implications would be significant. But this is not a story about the discovery of a new force. It is a review of experiments and ideas, some of them controversial.
What Researchers Tried to Test
The researchers whose work the report reviewed tried to determine whether superconductors could produce, detect, or alter gravitational effects. Among the claims the report examined were that a spinning superconductor, or one supplied with electricity, might produce an anomalous effect.
The report does not describe a single experiment in which this effect was observed. Instead, it surveys several lines of research and laboratory experiments. The review therefore cannot be taken as proof that spinning matter actually changes gravity. It describes a question researchers tried to investigate, not one an experiment answered.
A Propulsion Idea, Too
The review also examined ideas linking superconductors, gravitational waves, and propulsion. Gravitational waves are waves associated with gravity. Researchers explored the connection between these fields to see whether a gravitational effect might have practical uses, such as propulsion.
These are far-reaching ideas, but the report addressed them as part of exploratory research. It also reviewed controversial theories and experiments whose results sparked debate. The question was whether there was a real, measurable phenomenon, not whether anyone had already found a new way to propel an aircraft.
What Remains Unknown
It is not known whether superconductors really produce anomalous gravitational effects. According to the report, the evidence was weak, and the central claims had not been convincingly replicated. Both the theories and the experimental results remained controversial.
Spinning matter, gravity, and the distance between an intriguing idea and a demonstrable phenomenon.
