A multi-institutional team of physicists is proposing an experiment to test whether gravity behaves as a quantum entity when measured. They published a description of their experiment in the journal Physical Review Letters and state that once a means for conducting the experiment has been achieved, they hope the results will lead to the development of a grand unified theory of physics. A multi-institutional team of physicists is proposing an experiment to test whether gravity behaves as a quantum entity when measured. They published a description of their experiment in the journal Physical Review Letters and state that once a means for conducting the experiment has been achieved, they hope the results will lead to the development of a grand unified theory of physics. General Physics Quantum Physics Phys.org – latest science and technology news stories