In the latest experiment, researchers at NEC developed a devicethat fired a laser pulse into a glass chamber filled with a vaporof cesium atoms. Nothing can move faster than the speed of light. The rate at which space is expanding is far greater than the speed of light and that is why light cannot travel across the universe.
The current evidence of the fact can be seen in the phenomenon called Metric Expansion of Space. Chiao has performed similar experiments using electricfields. After Big Bang, the Expansion of universe took place much faster than the speed of light. Previously Thought Impossible“This is a breakthrough in the sense that people have thoughtthat was impossible,” said Raymond Chiao, a physicist at theUniversity of California at Berkeley who was not involved in thework. Strange things begin to happen as you approach the speed of light, and if its possible, even stranger things would happen if you exceed the speed of light.C. Light waves move a lot quicker through any clear substance than sound waves can even come close to. Light can move so much faster because of the different types of waves sound and light are. The achievement has no practical application right now, butexperiments like this have generated considerable excitement in thesmall international community of theoretical and opticalphysicists. In air, sound travels at around 340 meters per second which is very slow in comparison to light. The results were published in Thursday’s issue of the journalNature. “This effect cannot be used to send information back in time,”said Lijun Wang, a researcher with the private NEC Institute.“However, our experiment does show that the generally heldmisconception that ‘nothing can travel faster than the speed oflight’ is wrong.”
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