Some theories suggest there could be many more dimensions that we’re unaware of, mostly because they’re imperceptibly tiny. Now researchers have taken the search for extra dimensions down to the nanoscale, using a neutron beam to study gravitational forces more precisely than ever before.
Albert Einstein is famous for his theories on relativity, but what of his other grand hypothesis, the unified field theory that consumed the last 30 years of his life without resolution? So will a unified theory of everything ever be realized?
ScienceResearchers with the Lawrence Berkeley National Laboratory and the University of California Berkeley have measured what is believed to be the smallest force yet recorded – 42 yoctonewtons, or a septillionth of a newton.