Scientists curve light
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- pilgrimperks
- added this
Professor Kishan Dholakia of the School of Physics and Astronomy commented, "Physics holds many surprises; our understanding of how light moves and behaves is challenged by such beams and it is exciting to see them move into the interdisciplinary arena - light has thrown us a curve ball.
"A standard beam of light spreads as it travels due to the wave effect known as diffraction. Take a laser pointer - even that would be 100km wide if this light beam were to reach the moon.
"Our research has shown that certain light beams do not diffract or spread - they can travel around corners and propel particles round corners. This is a new discovery in the phenomenon of light moving particles."
Thirty years ago scientists found that the Airy beam, named after the famous British astronomer Sir George Airy, had a mathematical parallel in optics. Recently, it was discovered that the beam actually 'bends' or curves as the beam moves through space unlike a laser pointer, for example.
The St Andrews team have now taken things much further by utilising this unusual curving property of Airy beams to send particles literally around curves and corners, sweeping aside or 'clearing' particles within a sample chamber.
Team member Joerg Baumgartl said, "The Airy beam allows us to clear a sample chamber without any moving light fields: in essence it acts like a small snow-blower for microscopic glass particles and even cells. It could have major applications in microfluidic engineering and cell biology."
The findings of Joerg Baumgartl, Michael Mazilu and Kishan Dholakia in the School of Physics and Astronomy are published in the latest edition of the journal Nature Photonics.
The team are now exploring a number of new avenues with these light fields including intriguing new particle sorting as well as possible methods for separating chosen cells from a given population.
"This beam shows a wonderful example of how an elegant but perhaps obscure mathematical discovery in quantum mechanics has powerful analogies to laser beams and in turn leads to important new applications for science," said Michael Mazilu.
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cybama
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Indeed...perhaps China is using this to hack Skype! Yikes!!!
But yes, sweet action. Mabye this can have some healthcare implications in nano-surgery for CABG operations or ischemic stroke patients. Way to go fellas!
- 3 years ago
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cybama
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Inofuilwell
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The implications are enormous.
- 3 years ago
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Inofuilwell
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blackdaylight
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i'd prefer peace, but i suppose this is an important discovery.
- 3 years ago
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blackdaylight
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asherp
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In order for Light to act on another particle with mass, wouldn't that require the light to have mass as well?
This confirms something I've suspected since I was like 8 years old and first saw a Crooke's Radiometer.
- 3 years ago
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asherp
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smice
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So if a light goes on in the forest, and there is no one there to see it...?
- 3 years ago
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smice
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Nancyf
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Cool.
- 3 years ago
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Nancyf
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khromadjo
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Maybe now they can start making those light cycles from TRON.
- 3 years ago
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khromadjo
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FreshBananas
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I wonder if they could make laser pointers that shoot around corners....no one would ever suspect it came from around the corner, its brilliant.
- 3 years ago
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FreshBananas
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globewatcher
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"NEW LASER TAG GUN SHOOTS AROUND CORNERS"
- 3 years ago
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globewatcher
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Mark701
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"A standard beam of light spreads as it travels due to the wave effect known as diffraction. Take a laser pointer - even that would be 100km wide if this light beam were to reach the moon. Tell us why this is interesting"
Not to nitpick here but this seems to be describing "diffusion", not defraction. Defraction is the property by which light can be bent. Diffusion would result in light spreading out. Just my opinion
- 3 years ago
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Mark701
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shirp
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Mark701:
*uh you musta meant REFRACTION...
also i think this article was trying to explain light being found able to be bent with out the use of refractors- microscopes/telescopes etc. but i do think you made a good point about diffusion- obviously if light is able to be diffused, it is able to bend 'naturally'. - 3 years ago
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shirp
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BFAM_RVS
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Christmas lights can now we taken to a whole other level....
- 3 years ago
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BFAM_RVS
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purplefox
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I saw an amazing presentation about the possibilities of light a few months back - physicists were able to use light to trap and move latex beads, yeast cells, and even change the shape and growing direction of fungal spores. Light's amazing...
- 3 years ago
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purplefox
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mikesupertramp
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did not einstein prove his theory of relativity by noticing light bending around the sun? seems like this news is probably about 90 yrs old
- 3 years ago
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mikesupertramp
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24French
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Way to go light! Confound the note takers!
- 3 years ago
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24French
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jonny2times
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maybe its time to develop a telescope that can gaze around planetary and celestial bodies. give the hubble a lazy eye.
- 3 years ago
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jonny2times
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jubal
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This is not surprising given the unusual properties of light beams traveling in the medium of water. Even when the water bends, the light waves bend with the water. It makes sense that there would be beams that could accomplish the same feat in a different medium like air, or a vacuum, or even in a dark matter field, and certainly a fiber optic cable that can be coiled and bent.
- 3 years ago
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jubal
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elegua
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so cool, the applications are mind boggling
- 3 years ago
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elegua
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JaetheFirst
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Sounds awesome. Now, let's create a vaccine for AIDS.
- 3 years ago
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JaetheFirst
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Nephwrack
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does this mean i can get that cool predator armor camoflage thingie? ;-P
- 3 years ago
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Nephwrack
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mattbrawn
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"light has thrown us a curve ball."
And I think we might have caught it. Go team!
- 3 years ago
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mattbrawn
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Lajon53
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Announcement seek true possibilities of laser pointer!!
- 3 years ago
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Lajon53
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satanskidney
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did the light choose to curve or was it born that way?
- 3 years ago
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satanskidney
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KateLove
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satanskidney:
hahaha!
- 3 years ago
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KateLove
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Eat_Disco
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satanskidney:
Ba-zing...
- 3 years ago
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Eat_Disco
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KateLove
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Hey, and we didn't even need the LHC for this one.
- 3 years ago
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KateLove
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hcoteen2008
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Yay! Maybe we can get lightsabre's now!! If so, I'm so getting one.
- 3 years ago
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hcoteen2008
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lloves_earth
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Fiiber optics doesn't seem so innovative now if we can manipulate the light beam. Move over fios, this is the future of communication and then some.
- 3 years ago
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lloves_earth
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outtheinside
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if i'm getting this right, then you guys haven't gotten the gist of the story.. because all the light outside, inside, even in the dark, is not entirely composed of Airy beams.. there is no practical large scale use. So far, it is on the micro/cellular scale as mentioned.
still.. this is pretty sweet.
- 3 years ago
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outtheinside
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wmdennis
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this could be an immense step in telecommunication. utilizing light to transmit information and sending to a destination without the worry of objects blocking its path could be a future implementation of this science.
- 3 years ago
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wmdennis
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petarro
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wmdennis:
I don't think this really applies...
- 3 years ago
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petarro
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PatrioticAstronaut
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Can you say 360 degree displays?
- 3 years ago
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PatrioticAstronaut
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Moopak
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It has never even occurred to me that light doesn't bend, it reflects off things but doesn't curve. Like, imagine turning on a flashlight that curves to the left or right but not straight ahead.
Am I the only one who never thought about that before?
- 3 years ago
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Moopak
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Eat_Disco
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And my physics teacher always told me that it was impossible to bend light without gravity.
- 3 years ago
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Eat_Disco
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odysseyx
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One step closer to buying a 6 dollar light saber at Walmart. I get the shivers just thinking about it.
- 3 years ago
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odysseyx
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Nephwrack
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odysseyx:
lol i wouldnt even wrap my hands around a six dollar lightsaber.
- 3 years ago
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Nephwrack
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Dmitri_Molotov
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Invisibility field time...
- 3 years ago
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Dmitri_Molotov
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TReaper405
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Dmitri_Molotov:
This is already being worked on using negative refraction. They can already make something completely invisible to microwave radiation but only partial invisibility to visible light so far.
http://current.com/items/89190148_invisible_cloak_coming_soon
- 3 years ago
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TReaper405
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molly22
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There is a practical use for video games in there somewhere.
- 3 years ago
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molly22
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Dubdice23
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Since we know how to bend light now, is there any way to make someone invisible by bending the light around them?
- 3 years ago
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Dubdice23
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RiverNyl
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Dubdice23:
good ol' current...
- 3 years ago
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RiverNyl
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deeblackangel
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I say we use this technology in the future to propel our spaceships through galaxy's at the speed of light without the frightening thought of crashing into a planet at the speed of light.
Bravo fellas - 3 years ago
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deeblackangel
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Eat_Disco
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deeblackangel:
Might i be a mega nerd for a moment:
you cant travel at the speed of light because it would take an infinite amount of energy.
got to piss on some ones parade and be a mega nerd YES! - 3 years ago
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Eat_Disco
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NickerBocker09
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deeblackangel:
actually it is possible, comon people. They thought flying was impossible and gave all these reasons why, proved em wrong.
- 3 years ago
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NickerBocker09
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torybart
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deeblackangel:
Just add "theoretically impossible" and you're right. If you go the speed of light then nothing would exists - theoretically. But there is so much about physics that we don't know that will probably turn that theory on its head. My guess is tortion physics.
- 3 years ago
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torybart
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ChristmasAsen
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deeblackangel:
How much Gs would you be subjected to if you were going the speed of light?
- 3 years ago
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ChristmasAsen
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asherp
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deeblackangel:
Trick question!
Change in G-force is a result of inertia. If you are already traveling the speed of light, you wouldn't feel any G-force, other than any other objects around you exerting their gravity on you.
Although, relative to light, everything travels at the speed of light.
- 3 years ago
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asherp
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Elligirl
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Woah.
- 3 years ago
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Elligirl
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