Radio dating with isotopes
Founded in 2002 by Nobel Laureate Carl Wieman, the Ph ET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations.Ph ET sims are based on extensive education research and engage students through an intuitive, game-like environment where students learn through exploration and discovery. Recent puzzling observations of tiny variations in nuclear decay rates have led some to question the science behind carbon-14 dating and similar techniques.However scientists tested the hypothesis that solar radiation might affect the rate at which radioactive elements decay and found no detectable effect.According to NIST scientist emeritus Richard Lindstrom, the variations observed in other experiments may have been due to environmental conditions interfering with the instruments themselves."There are always more unknowns in your measurements than you can think of," Lindstrom says.
The decay of uranium-238, which has a half-life of nearly 4.5 billion years, enabled geologists to determine the age of the Earth.National Institute of Standards and Technology (NIST)."Radiometric dating still reliable (again), research shows." Science Daily. After two years of searching for a special radioactive decay that would provide an indication of new physics beyond the standard model, an experiment deep under ground near Carlsbad has so far found ...Sterilisation of Food and Surgical Instruments Gamma rays kill bacteria.Therefore irradiating food or surgical instruments is a good way of ensuring they are sterile.