If true, virtually all aspects of traditional physics are affected, including the presumed steady state of radioactive decay used to measure geologic time. [1]. Scientists slow down the speed of light travelling in free space Date: January 23, 2015 Source: University of Glasgow Summary: Scientists have … The entire field of physics is presently in a state of upheaval. In fact, there is a deep space probe that has an on board experiment to determine if that's true or not. Is the Speed of Light Slowing Down? The Hubble constant is 70.1 ± 1.3 (km/s)/Mpc meaning for every megaparsec 70.1 ± 1.3 kilometers are created every second. If our world had no atmosphere (air refracts and slows down light a little bit), a photon skimming along its surface could lap the equator nearly 7.5 times every second. In this animation, the speed of light appears to be quite fast-, however, the film likewise demonstrates how finite it is. Earth is 24,901 miles around at its center. According to relativity theory, an astronaut traveling at close to the speed of light will not get old as fast as those she leaves behind on Earth. so recentl scientists have started to think that the speed of light may not be constant after all. It travels an astounding 186,000 miles per second. And you're right. Many different measurements of the speed of light have been made in the last 180 or so years. The only example I've seen about the subject that makes any sense to me is an example given about a large analog clock syncronized with my watch moving away earth at near light speed. A Slower Speed of Light is a first-person game prototype in which players navigate a 3D space while picking up orbs that reduce the speed of light in increments. Setterfield chose 120 data points from 193 measurements available (see Dolphin n.d. for the data), and the line of best fit for these points shows the speed of light decreasing. the speed of light may be slowing down but not in space.it could be due to global warming pollution and possibly the global impact of the ozone layer.einstiens therory of relativity holds constant even in a void or vaccum or a black hole.there is not any way to reformulate E or m or c.you cant even use the formula E=mc(3) 0 0. Modern physics rests on the foundational notion that the speed of light is a constant, which in a vacuum is 186,000 miles per second (299,792 km/s). Recorded live at the Time and Creation Research Conference Sydney NSW Australia. The speed of light is constant when it is in a vacuum. Yet, some of the most dramatic changes in scientific perspective come only after much debate, vigorous opposition, and the like. The jury is still out on this. Philip Perry | Big Think. In the last ten years, scientists have done some amazing things by slowing down the speed of light. Well over a decade ago, Creation magazine published very supportive articles concerning a theory by South Australian creationist Barry Setterfi eld, that the speed of light (‘c’) had slowed down or ‘decayed’ progressively since The Speed of Light is Slowing Down. This photon, which is identical to the first, travels at the speed of light until it is absorbed by another atom and the process repeats. When light enters a transparent medium, it becomes a phonon - it's no longer a photon travelling through a vacuum at the speed of light, it's a wave being propagated through a medium. The older measurements were not as accurate as the latest ones. The possibility that the speed of light is not a "constant" after all and has been slowing down is highly controversial and conjectural. 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