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Joined: May 2003
Posts: 43,952 Likes: 6
Officially "too old for this shit" 15000+ posts
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Officially "too old for this shit" 15000+ posts
Joined: May 2003
Posts: 43,952 Likes: 6 |
Now you see it, now you don't: Cornell scientists create time cloak- scientists have made an entire event impossible to see. They have invented a time masker.
Think of it as an art heist that takes place before your eyes and surveillance cameras. You don’t see the thief strolling into the museum, taking the painting down or walking away, but he did. It’s not just that the thief is invisible — his whole activity is.
What scientists at Cornell University did was on a much smaller scale, both in terms of events and time. It happened so quickly that it’s not even a blink of an eye. Their time cloak lasts an incredibly tiny fraction of a fraction of a second. They hid an event for 40 trillionths of a second, according to a study appearing in Thursday’s edition of the journal Nature.
We see events happening as light from them reaches our eyes. Usually it’s a continuous flow of light. In the new research, however, scientists were able to interrupt that flow for just an instant.
Other newly created invisibility cloaks fashioned by scientists move the light beams away in the traditional three dimensions. The Cornell team alters not where the light flows but how fast it moves, changing in the dimension of time, not space. They tinkered with the speed of beams of light in a way that would make it appear to surveillance cameras or laser security beams that an event, such as an art heist, isn’t happening.
Another way to think of it is as if scientists edited or erased a split second of history. It’s as if you are watching a movie with a scene inserted that you don’t see or notice. It’s there in the movie, but it’s not something you saw, said study co-author Moti Fridman, a physics researcher at Cornell.
The scientists created a lens of not just light, but time. Their method splits light, speeding up one part of light and slowing down another. It creates a gap and that gap is where an event is masked. “You kind of create a hole in time where an event takes place,” said study co-author Alexander Gaeta, director of Cornell’s School of Applied and Engineering Physics. “You just don’t know that anything ever happened.”
This is all happening in beams of light that move too fast for the human eye to see. Using fiber optics, the hole in time is created as light moves along inside a fiber much thinner than a human hair. The scientists shoot the beam of light out, and then with other beams, they create a time lens that splits the light into two different speed beams that create the effect of invisibility by being too fast or too slow. The whole work is a mess of fibers on a long table and almost looks like a pile of spaghetti, Fridman said.
It is the first time that scientists have been able to mask an event in time, a concept only first theorized by Martin McCall, a professor of theoretical optics at Imperial College in London. Gaeta, Fridman and others at Cornell, who had already been working on time lenses, decided to see if they could do what McCall envisioned.
It only took a few months, a blink of an eye in scientific research time. “It is significant because it opens up a whole new realm to ideas involving invisibility,” McCall said.
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Joined: Mar 2004
Posts: 17,868 Likes: 16
Son of Anarchist 15000+ posts
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Son of Anarchist 15000+ posts
Joined: Mar 2004
Posts: 17,868 Likes: 16 |
I'm going to use it to end the war between the Daleks and the Timelords.
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Joined: Feb 2002
Posts: 19,516 Likes: 12
brother from another mother 15000+ posts
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brother from another mother 15000+ posts
Joined: Feb 2002
Posts: 19,516 Likes: 12 |
This is all happening in beams of light that move too fast for the human eye to see. scientists create an invisible event that moves to fast for you to see. They probably didn't do shit and are just looking for some research money.
"My friends have always been the best of me." -Doctor Who
"Well,whenever I'm confused,I just check my underwear. It holds most answers to life's questions." Abe Simpson
I can tell by the position of the sun in the sky, that is time for us to go. Until next time, I am Lothar of the Hill People!
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Joined: Jan 2002
Posts: 15,367 Likes: 13
Banned from the DCMBs since 2002. 15000+ posts
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Banned from the DCMBs since 2002. 15000+ posts
Joined: Jan 2002
Posts: 15,367 Likes: 13 |
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Joined: Feb 2001
Posts: 33,385 Likes: 3
Regenerated 15000+ posts
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Regenerated 15000+ posts
Joined: Feb 2001
Posts: 33,385 Likes: 3 |
Highway to the Phantom Zone!
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Joined: Feb 2002
Posts: 19,516 Likes: 12
brother from another mother 15000+ posts
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brother from another mother 15000+ posts
Joined: Feb 2002
Posts: 19,516 Likes: 12 |
Revvin' up your phantom zone projector
Listen to her howlin' roar
Metal under tension
Beggin' you to touch and go
"My friends have always been the best of me." -Doctor Who
"Well,whenever I'm confused,I just check my underwear. It holds most answers to life's questions." Abe Simpson
I can tell by the position of the sun in the sky, that is time for us to go. Until next time, I am Lothar of the Hill People!
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Joined: Jun 2005
Posts: 6,747
I've got more guns than you. 6000+ posts
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I've got more guns than you. 6000+ posts
Joined: Jun 2005
Posts: 6,747 |
This is all happening in beams of light that move too fast for the human eye to see. scientists create an invisible event that moves to fast for you to see. They probably didn't do shit and are just looking for some research money. I'm still waiting on them to invent a fail-safe way of silencing farts..
"Ah good. Now I'm on the internet clearly saying I like tranny cleavage. This shouldn't get me harassed at all." -- Lothar of the Hill People
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Joined: Jun 2004
Posts: 46,308
Who will I break next? 15000+ posts
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Who will I break next? 15000+ posts
Joined: Jun 2004
Posts: 46,308 |
I thought your land lord already found a way?
November 6th, 2012: Americas new Independence Day.
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Joined: Feb 2001
Posts: 33,385 Likes: 3
Regenerated 15000+ posts
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Regenerated 15000+ posts
Joined: Feb 2001
Posts: 33,385 Likes: 3 |
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Joined: Feb 2012
Posts: 39
bored IT nerd 25+ posts
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bored IT nerd 25+ posts
Joined: Feb 2012
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Joined: Feb 2012
Posts: 39
bored IT nerd 25+ posts
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bored IT nerd 25+ posts
Joined: Feb 2012
Posts: 39 |
Fucking hipster time travelers.
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