VnutZ Domain
Copyright © 1996 - 2020 [Matthew Vea] - All Rights Reserved

2011-07-31
Featured Article

Faster Than Light Time Travel Proven Impossible

[index] [1,047 page views]
Tagged As: Physics and Science

There are those who believe the key to time travel is being able to exceed the speed of light. Unfortunately for them, Professor Shengwang Du from the Hong Kong University of Science and Technology has proven such a feat is impossible.

"The results add to our understanding of how a single photon moves. They also confirm the upper bound on how fast information travels with light," said Prof Du. "By showing that single photons cannot travel faster than the speed of light, our results bring a closure to the debate on the true speed of information carried by a single photon. Our findings will also likely have potential applications by giving scientists a better picture on the transmission of quantum information."

His experiments generated photon pairs and then blasted them through cooled rubidium atoms to achieve the electromagnetically induced transparency (pdf) effect. This would separate the photons from their optical precursor and then allow measurements to be made against slowed, normal and superluminal light where they found no variations in the precursor. The idea was to test causality. and as a result, they found that photons obey Einstein's laws of relativity.



More site content that might interest you:

Do you know what your TV is doing on the Internet?


Try your hand at fate and use the site's continuously updating statistical analysis of the MegaMillions and PowerBall lotteries to choose "smarter" number. Remember, you don't have to win the jackpot to win money from the lottery!


Tired of social media sites mining all your data? Try a private, auto-deleting message bulletin board.