“My own personal opinion is that time is a human construct,” says Tom O’Brian. O’Brian has thought a lot about this over the years. He is America’s official timekeeper at the National Institute of Standards and Technology in Boulder, Colorado. To him, days, hours, minutes and seconds are a way for humanity to “put some order in this very fascinating … Read More
Time travel simulated by Australian physicists
Physicists at the University of Queensland in Australia have used photons – single particles of light – to simulate quantum particles travelling through time and study their behaviour. They were hoping to find out more about whether time travel would be possible at the quantum level – a theory first predicted in 1991. In the study, the researchers simulated the … Read More