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Scientist invent invisibility cloak to hide objects
Bangalore: No, this is no magic, but pure science. German scientists have created a three-dimensional "invisibility cloak" that can hide objects by bending light waves. "For now these...cloaking devices are just a beautiful and exciting benchmark to show what transformation optics can do," said Tolga Ergin of the Karlsruhe Institute of Technology, according to Reuters.
These scientists have published their finding in the journal Science and in their study, Ergin and his colleagues used photonic crystals with a structure that looks like piles of wood to make an invisibility device, or cloak. Transformation optics use a class of materials called metamaterials that guide and control light. It is possible that in the future make it possible large objects invisible, but for now the researchers said they were not keen to speculate on possible applications.
They used the cloak to conceal a small bump on a gold surface -- a bit like hiding a small object underneath a carpet and then making both the bump and the carpet invisible. The "cloak" was composed of special lenses that work by partially bending light waves to suppress the light scattering from the bump. "This is very exciting, because mankind has always thought about being invisible or having invisibility cloaks," Ergin told Reuters in a telephone interview. "This is the first proof of principle. It shows that the technique works."
He added, however, that it would be many years before anything as large as a person, car or tank could be made to disappear with this technique. "There have been proposals in the field of transformation optics for different devices like beam concentrators, beam shifters, super antennas which concentrate light into one point from all directions, and much, much more. It is really hard to say what the future will bring, but the field is definitely very broad and the possibilities are very large."
These scientists have published their finding in the journal Science and in their study, Ergin and his colleagues used photonic crystals with a structure that looks like piles of wood to make an invisibility device, or cloak. Transformation optics use a class of materials called metamaterials that guide and control light. It is possible that in the future make it possible large objects invisible, but for now the researchers said they were not keen to speculate on possible applications.
They used the cloak to conceal a small bump on a gold surface -- a bit like hiding a small object underneath a carpet and then making both the bump and the carpet invisible. The "cloak" was composed of special lenses that work by partially bending light waves to suppress the light scattering from the bump. "This is very exciting, because mankind has always thought about being invisible or having invisibility cloaks," Ergin told Reuters in a telephone interview. "This is the first proof of principle. It shows that the technique works."
He added, however, that it would be many years before anything as large as a person, car or tank could be made to disappear with this technique. "There have been proposals in the field of transformation optics for different devices like beam concentrators, beam shifters, super antennas which concentrate light into one point from all directions, and much, much more. It is really hard to say what the future will bring, but the field is definitely very broad and the possibilities are very large."
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Reader's comments (22)
1: science would really prove one day that there
is no word like impossible.
Posted by: abhishake bhatt - 30 Mar, 2010
2: It is part blur game always happen with
eastern countries esp with India.we know this
kind of jantarm mantar since from ancestor
time
Posted by: sandeep - 23 Mar, 2010
3: Most of Indian ancient inventions, their
documentation and the knowledge rich preists
got burnt during the barbaric burning of our
great universities like Nalanda, Taxsila , by
foreign fanatic invedors..and during foreign
rule most of our wealth got stolen and
ammased in Pursia and London...Please have
proud of this land guys.. Even after 1000s of
years of ruining,, India is again on the way
of propsperity.. though through route of
outsourcing , or whatever... India is
shining, bcoz of its people's abilities.
Posted by: Ominn - 21 Mar, 2010
4: we in telugu have movies called
"pathalabairavi"in we see things..the movies
i'm speakin here dated back to the
1960's...
Posted by: cherry - 20 Mar, 2010
5:In all vitalacharya's movies they have used
these type of techniques...:-)
vasu replied to: cherry
post - 22 Mar, 2010
post - 22 Mar, 2010
6:"pathalabairavi" ha ha ha ... good one
Jack replied to: cherry
post - 20 Mar, 2010
post - 20 Mar, 2010
7: How does it really matter. These things have
been proposed many centuries back but we
should be proud to see these things getting
materialized in this era... I had also read
an article which states that now the blind
can see through his tongue. These things
should be encouraged and not criticized.
According to me its a Good Invention hope it doesn't goes in wrong Hands
According to me its a Good Invention hope it doesn't goes in wrong Hands
Posted by: Sushil Kumar - 20 Mar, 2010
8: When some Indian literature says that a
substance or human being has the capability
to disappear, nobody believes it and that
becomes a laughable subject. A foreigner does
some some crap research and comes up with a
theory and that becomes subject of amazement.
That's called Kaliyug. May God bless us all
with his ultimate wrath.
Posted by: doesthismakesense - 20 Mar, 2010
9:most of Indian ancient inventions, their
documentation and the knowledge rich preists
got burnt during the barbaric burning of our
great universities like Nalanda, Taxsila , by
foreign fanatic invedors..and during foreign
rule most of our wealth got stolen and
ammased in Pursia and London...Please have
proud of this land guys.. Even after 1000s of
years of ruining,, India is again on the way
of propsperity.. though through route of
outsourcing , or whatever... India is
shining, bcoz of its people's abilities.
Omi replied to: doesthismakesense
post - 21 Mar, 2010
post - 21 Mar, 2010
10:even Pythagorean theorem was stated bac by a
indian many yeaars ago when it was actually
prove by pythgrous,only problem is there is
no proper proof.in he same way many invenions
are made by indians,but problem is same no
proof which is to be accepted by any
scientfic communuity which is nt able to
provide by indian communite.
dara shyamsundar replied to: doesthismakesense
post - 20 Mar, 2010
post - 20 Mar, 2010
11:Which Indian literature you are talking
about, may I know?. And for that matter, how
many people know about it? Simple literature
will not do to prove a scientific fact to the
world at large. You need to produce it in
front of many so that the matter doesn't
remain a mystique but becomes part of
science. THIS IS A REQUIREMENT OF SCIENCE,
WHICH ONE MUST RESPECT. No point becoming
sentimental over discoveries or inventions
that advances the civilization in one or
other way....it is our fault not to document
everything with proof so that everybody can
learn about it.
A Chakraborty replied to: doesthismakesense
post - 20 Mar, 2010
post - 20 Mar, 2010
12: Ancient Indians discovered numerous things,
but did not expect any recognition from the
'Science Community'(which did not exist in
those days) will be questioned for
documentation! Moreover, a lot of documents
were systematically destroyed or stolen
during COLONIAL RULE.
Even the modern missiles were first developed by Tippu Sultan, who was defeated by British, and the technology was transferred to Britain!
Even the modern missiles were first developed by Tippu Sultan, who was defeated by British, and the technology was transferred to Britain!
Rajendhran replied to: A Chakraborty
post - 20 Mar, 2010
post - 20 Mar, 2010
13: Guys, what we read in literature is
imagination, not invention. It is simply
imagination of some invention.
It is good to be proud for Indians, but don't ridiculously argue that everything was invented by India. Some one missiles were invented by Tippu. It is agreeable to say Tippu Sultan used them, but missiles were invented by Chinese. Don\'t change the history your way.
Also, it was not Britain who used missiles from India. It was Germany who made use of missiles in World War. It was only after that, missiles became popular.
It is good to be proud for Indians, but don't ridiculously argue that everything was invented by India. Some one missiles were invented by Tippu. It is agreeable to say Tippu Sultan used them, but missiles were invented by Chinese. Don\'t change the history your way.
Also, it was not Britain who used missiles from India. It was Germany who made use of missiles in World War. It was only after that, missiles became popular.
Ben replied to: Rajendhran
post - 20 Mar, 2010
post - 20 Mar, 2010
14: hie . i dont know about what litrature he's
talking about .. but as per my knowledge ,
India has not created any platform for
upcoming scientists , .. its hard for them to
bring up their products and establish it .
India lacks in innovation .
caldwell replied to: A Chakraborty
post - 20 Mar, 2010
post - 20 Mar, 2010
15: how s relTED TO GOLD BISCUTS U JERKS
Posted by: SAGA - 19 Mar, 2010
16:True India has not created any platform and
respected its Engineers & Scientists.
statistics show the number of suicides
committed by Engineers & Scientists out
of frustation in leading research
institutes.Pandit jawarlal Nehru a visionary
respected their worth and drafted the
Industrial Revolution in India on which we
confidently stand today but presntly our
Administrative Officialdom highjacked the
approach and now Rule the Country. Its
frustating to see a Dy.Collector ( State
PSC)as MD of Govt. Bodies over-ruling the
technocrats & scientists.
PRADEEP BHADAURIYA replied to: SAGA
post - 21 Mar, 2010
post - 21 Mar, 2010
17:There are many inventions that india and its
epics and other literature have given.
mahabharata is studded with so many vuch
inventions. Zero was invented in India. we
can actually have a laundry list of ancient
and modern Indian inventions
Basab Mukherjee replied to: SAGA
post - 20 Mar, 2010
post - 20 Mar, 2010
18: Guys, what we read in literature such as
Mahabharata is imagination, not invention. It
is simply imagination of some invention.
I can write a literature in which I can say man see with tongue, taste with ears, and hear with eyes. Can it be called invention. Mahabharata is such a story, that is it.
It is good to be proud for Indians, but do not ridiculously argue that everything was invented by India. Some one posted that missiles were invented by Tippu Sultan. It is agreeable to say Tippu Sultan used them, but missiles were invented by Chinese. Do not change the history your way.
Also, it was not Britain who used missiles firstly. It was Germany who made use of missiles in World War. It was only after that, missiles became popular.
I can write a literature in which I can say man see with tongue, taste with ears, and hear with eyes. Can it be called invention. Mahabharata is such a story, that is it.
It is good to be proud for Indians, but do not ridiculously argue that everything was invented by India. Some one posted that missiles were invented by Tippu Sultan. It is agreeable to say Tippu Sultan used them, but missiles were invented by Chinese. Do not change the history your way.
Also, it was not Britain who used missiles firstly. It was Germany who made use of missiles in World War. It was only after that, missiles became popular.
Ben replied to: Basab Mukherjee
post - 20 Mar, 2010
post - 20 Mar, 2010
19: The nuclear technology is not something new.
In Mahabharath, the description of the
effects of Brahmastra is exactly same as the
effects of a nuclear bombing.... These are
the words of our Former Honorable President
and father of Indian missile programme, Dr.
APJ Abdul Kalam. What do you say to this..
HIS imagination..
madhu replied to: Ben
post - 21 Mar, 2010
post - 21 Mar, 2010
20: HI WHAT R U SAYING THAT U CAN WRITE SOMETHING
LIKE MAHABHARAT. FOR UR KIND INFORMATION CAN
U WRITE A SINGLE THING WHICH WILL BE THEIR
EXISTING AFTER 30 CENTURIES.
THINK IN THIS WAY IMAGINATION IS A GREAT THING BUT U CAN NOT IMAGINE WITHOUT BASIC UNDERSTANDING OF THE SCIEND AND THE WORLD AROUND U.
FOR A SECOND IMAGINE URSELF IN THE PERIOD OF STONEAGE MAN AND THINK WHETHER U WOULD HAVE THINK OF THE AEROPLANE AT THAT TIME. FOR UR KNOWLEDGE LET ME TELL U THAT MOST OF THE THINGS WRITTEN IN MAHABHARAT ARE FISIBLE TODAY. ITS NOT A STORY IT IS PURE SCIENCE BUT WITHOUT DOCUMENTATION OR DESTROYED DOCUMENTATION. JUST READ MAHABHARAT ONCE
THINK IN THIS WAY IMAGINATION IS A GREAT THING BUT U CAN NOT IMAGINE WITHOUT BASIC UNDERSTANDING OF THE SCIEND AND THE WORLD AROUND U.
FOR A SECOND IMAGINE URSELF IN THE PERIOD OF STONEAGE MAN AND THINK WHETHER U WOULD HAVE THINK OF THE AEROPLANE AT THAT TIME. FOR UR KNOWLEDGE LET ME TELL U THAT MOST OF THE THINGS WRITTEN IN MAHABHARAT ARE FISIBLE TODAY. ITS NOT A STORY IT IS PURE SCIENCE BUT WITHOUT DOCUMENTATION OR DESTROYED DOCUMENTATION. JUST READ MAHABHARAT ONCE
RAJAT replied to: Ben
post - 21 Mar, 2010
post - 21 Mar, 2010
21: Hey guys don't take all to on your shoulders
all know who is what, only fact is some agree
and some not, that's it.
So do the best in Ur part and U don't give chance for others to question U, or if U don't care of others and do things that are really good and much appreciated.
And some don't believe in things said and ask for proofs as they feel they know every thing. One thing proofs are needed only when some one say Ur wrong. That’s what the diff from those days to now.
So do the best in Ur part and U don't give chance for others to question U, or if U don't care of others and do things that are really good and much appreciated.
And some don't believe in things said and ask for proofs as they feel they know every thing. One thing proofs are needed only when some one say Ur wrong. That’s what the diff from those days to now.
sowmi replied to: Ben
post - 21 Mar, 2010
post - 21 Mar, 2010
22: I do agree with you man .....since
imagination and clear thinking makes you to
change the world.
jay replied to: sowmi
post - 22 Mar, 2010
post - 22 Mar, 2010
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