Optics

New PDF release: Slow light : invisibility, teleportation and other mysteries

Posted On April 21, 2018 at 4:34 am by / Comments Off on New PDF release: Slow light : invisibility, teleportation and other mysteries

By Sidney Perkowitz

ISBN-10: 0521640083

ISBN-13: 9780521640084

ISBN-10: 1848167520

ISBN-13: 9781848167520

ISBN-10: 1848167539

ISBN-13: 9781848167537

Gradual gentle is a well-liked therapy of latest awesome breakthroughs within the technology of sunshine. even if we do not comprehend light's quantum mysteries, we will be able to sluggish it to a cease and velocity it up past its Einsteinian pace restrict, 186,000 miles/sec; use it for quantum telecommunications; teleport it; control it to create invisibility; and maybe generate hydrogen fusion energy with it. All this can be lucidly awarded for non-scientists who ask yourself approximately teleportation, Harry Potter invisibility cloaks, and different tremendous results. gradual mild exhibits how the genuine technological know-how and the myth encourage one another, and initiatives light's great destiny. Emory physicist Sidney Perkowitz discusses how we're harnessing the mysteries of sunshine into applied sciences like lasers and fiber optics which are reworking our day-by-day lives. Science-fiction fantasies like Harry Potter's invisibility cloak are becoming actual probabilities. Please click on right here for more information

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Extra resources for Slow light : invisibility, teleportation and other mysteries of light

Sample text

For one thing, it was a major clue that light is electromagnetic in nature. The equations of electricity and magnetism that James Clerk Maxwell developed in the 1860s predicted that an accelerating electric charge would produce a traveling electromagnetic wave, as I wrote earlier, and also showed how to calculate the speed of the wave in space. ” To his surprise, the velocity he found for electromagnetic waves was, as he wrote in 1865: so nearly that of light, that it seems we have strong reasons to conclude that light itself… is an electromagnetic disturbance in the form of waves propagated through the electromagnetic field according to electromagnetic laws.

A speed of 150,000 to 200,000 km/sec in glass is still enormously fast. It means that a person watching an event through a window sees it only an imperceptibly small fraction of a nanosecond later than someone watching directly. It’s true that data bits in the form of infrared pulses travel through the optical fiber network at the speed of light in glass, not vacuum, but that’s still fast enough to travel around the Earth four times a second and faster by far than electrons in copper wire. However, if the speed of light were innately much lower than this or could be artificially slowed by a large factor, that would affect both the natural world and our technology, from the Internet to the Global Positioning System.

These are extremely small and bright light sources, now thought to be black holes at the centers of young galaxies. The black holes generate enormous jets of plasma, and the measured speeds of the jets were as high as ten times the speed of light. If true, this would represent a massive violation of the relativistic speed limit. Alas, these results are now accepted as due to incomplete knowledge. When an astronomer sees something moving far out in the universe, the motion looks transverse to his line of sight.

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Slow light : invisibility, teleportation and other mysteries of light by Sidney Perkowitz


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