What if Speed of Light comes to Crawl !!

Well, we all know, light is the fastest thing in the universe. The complete physics depends upon the speed of light. But what if, the light comes to crawl ??
This is the biggest question that arises in every ones mind. Scientist have been working over it for decades. and there years of hard work is paying them now. And the scientists at the University of Glasgow have achieved a breakthrough in this area. They've managed to slow the speed of light to a relative crawl – 741 miles per hour, or about the speed of sound. While that’s still fast relative to our own experience, remember that in a vacuum, the speed of light is 186,252 miles per second. So this is an incredible achievement.

Here’s how it works:

In research detailed in the latest edition of the journal Science, researchers Dr Sonja Franke-Arnold, Dr Graham Gibson and Prof Padgett, in collaboration with their colleague Professor Robert Boyd at the Universities of Ottowa and Rochester, took a different approach and set up an experiment: shining a primitive image made up of the elliptical profile of a green laser through a ruby rod spinning on its axis at up to 3,000 rpm.

Once the light enters the ruby, its speed is slowed down to around the speed of sound (approximately  741mph) and the spinning motion of the rod drags the light with it, resulting in the image being rotated by almost five degrees: large enough to see with the naked eye.

The rotation of the image is significant because, according to Dr. Franke-Arnold it can be used to encode information, giving the technique a possible application in computing. “Images are information and the ability to store their intensity and phase is an important step to the optical storage and processing of quantum information, potentially achieving what no classical computer can ever match.”

Bad News for Jailbreakers

Don't worry, you wont be fined or put behind bars for jail breaking. Its the Apple.Inc, whose going to make it difficult for the people to Jail Break iOS. Apple.Inc is coming up with their new OS i.e iOS 5& they believe it won't be easy to beak it.
 "Apple to prevent iDevices from being rolled back to previous versions", says the experts.


The iPhone Dev Team talked about Apple’s plan on making your jailbreak experience a bit more miserable by preventing your devices from being rolled back to previous iOS versions. The new changes will occur once iOS 5 becomes official but what’s important here is that all current iDevices, up to the iPad 2, will be jail breakable for life even after iOS 5 arrives.

Starting with the iOS5 beta, the role of the “APTicket” is changing — it’s being used much like the “BBTicket” has always been used. The LLB and iBoot stages of the boot sequence are being refined to depend on the authenticity of the APTicket, which is uniquely generated at each and every restore (in other words, it doesn’t depend merely on your ECID and firmware version…it changes every time you restore, based partly on a random number). This APTicket authentication will happen at every boot, not just at restore time. Because only Apple has the crypto keys to properly sign the per-restore APTicket, replayed APTickets are useless.

This will only affect restores starting at iOS5 and onward, and Apple will be able to flip that switch off and on at will (by opening or closing the APTicket signing window for that firmware, like they do for the BBTicket). geo hot’s limera1n exploit occurs before any of this new checking is done, so tethered jailbreaks will still always be possible for devices where limera1n applies. Also, restoring to pre-5.0 firmwares with saved blobs will still be possible (but you’ll soon start to need to use older iTunes versions for that). 

Although it’s always been just “a matter of time” before Apple started doing this (they’ve always done this with the BBTicket), it’s still a significant move on Apple’s part (and it also dovetails with certain technical requirements of their upcoming OTA “delta” updates).

Best Of Luck Jail Breakers...!