• Relativistic Time Dilation in Muon Decay

    According to Einstein’s special theory of relativity, a clock moving at a significant fraction of the speed of light with respect to an observer runs more slowly than the observer’s own clock. This implies that time must be flowing more slowly in a moving frame of reference, which is referred to as time dilation. If…

  • Measurement of the neutrino velocity with the OPERA detector

    Scanning results tau decays New results from OPERA on neutrino propertieslive from Main Amphitheatre. “This result comes as a complete surprise,” said OPERA spokesperson, Antonio Ereditato of the University of Bern. “After many months of studies and cross checks we have not found any instrumental effect that could explain the result of the measurement. While…

  • Time Dilation

    ……. is a phenomenon (or two phenomena, as mentioned below) described by the theory of relativity. It can be illustrated by supposing that two observers are in motion relative to each other, or differently situated with regard to nearby gravitational masses. They each carry a clock of identical construction and function. Then, the point of…

  • Muon

    The Moon‘s cosmic ray shadow, as seen in secondary muons generated by cosmic rays in the atmosphere, and detected 700 meters below ground, at the Soudan II detector. Composition: Elementary particle Particle statistics: Fermionic Group: Lepton Generation: Second Interaction: Gravity, Electromagnetic,Weak Symbol(s): μ− Antiparticle: Antimuon (μ+) Theorized: — Discovered: Carl D. Anderson (1936) Mass: 105.65836668(38) MeV/c2…