A Japanese team has shown that time at the Tokyo Skytree tower's observatory at around 450 meters above sea level passes four nanoseconds faster per day than at near ground level.The finding based on extremely precise "optical lattice clocks" that only go out of synch by one second in 16 billion years proves Albert Einstein's general theory of relativity, which predicts clocks in a strong gravitational field will tick slower than those in a field with weaker gravity.The outcome of the research led by Hidetoshi Katori of government-backed research institute Riken's Quantum Metrology Laborato…READ FULL ARTICLE