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NSLS-II is a synchrotron light source, designed to produce X-rays 10,000 times brighter than BNL's original light source, the National Synchrotron Light Source (NSLS). NSLS-II supports research in energy security , advanced materials synthesis and manufacturing, environment, and human health.
The National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory (BNL) in Upton, New York was a national user research facility funded by the U.S. Department of Energy (DOE). Built from 1978 through 1984, and officially shut down on September 30, 2014, [ 2 ] the NSLS was considered a second-generation synchrotron .
The speed of light in vacuum, commonly denoted c, is a universal physical constant that is exactly equal to 299,792,458 metres per second (approximately 300,000 kilometres per second; 186,000 miles per second; 671 million miles per hour).
Jesus compares himself to a doctor to show that, as a doctor fights disease by working with the sick, so Jesus must go to sinners in order to help them overcome their sins. Jesus had earlier announced that his mission was a call to repentance in Mark 1:14–15. The Oxyrhynchus Gospels 1224 5:1-2 also record this episode of "dining with sinners".
The two-way speed of light is the average speed of light from one point, such as a source, to a mirror and back again. Because the light starts and finishes in the same place, only one clock is needed to measure the total time; thus, this speed can be experimentally determined independently of any clock synchronization scheme.
1690 – Christiaan Huygens gives the first estimate of the speed of light in air or vacuum, based on Rømer’s work. The result is equivalent to about 2×10 8 m/s in modern units, correct only to the order of magnitude. 1727 – James Bradley correctly identifies the peculiar behaviour of γ Draconis as stellar aberration.
Augustine: "What Light it is to which John bears witness, he shows himself, saying, That was the true Light." [3]Chrysostom: "Or thus; Having said above that John had come, and was sent, to bear witness of the Light, lest any from the recent coming of the witness, should infer the same of Him who is witnessed to, the Evangelist takes us back to that existence which is beyond all beginning ...
In the King James Version of the English Bible the text reads: The light of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light. The World English Bible translates the passage as: “The lamp of the body is the eye. If therefore your eye is sound, your whole body will be full of light.