Science and sci-fi…
Tuesday, March 20th, 2012Einstein’s special theory of relativity differs from ordinary Galilean relativity in that the scientist who ended up looking like a beat poet made the assumption that the speed of light is constant in all inertial reference frames. That and the key word “inertial” makes the theory “special,” as opposed to “general.” (This is an over-simplification—the general theory is really a non-quantum theory of gravity, generalizing Newtonian gravity). Back in September, physicists associated with the Italian Opera experiment shook the world in announcing that Einstein’s assumption was incorrect. A sensor detected CERN-emitted neutrinos 453 miles away—the distance divided by the time lag gives a velocity.
Scientists hit the hooch, refusing to believe the results. As an ex-scientist, I did too. Over a century of experiments had confirmed Einstein’s assumption (it’s still true in the general theory, by the way). I had a number of people ask me about the experiment. Some even said, “Wow, Einstein was wrong!” My response was, “Let’s wait and see.” One experiment doesn’t overturn a theory—repeated experimental confirmation is required. The lesson learned here is that, whether he was right or wrong, Eisnstein was just a very able theoretician. Experiments determine the physics and the scientific method always prevails—theories have to be tested. In this case, the disbelief spurred experimentalists to check the Opera results.