Bookmark Kaumudi Online  Bookmark this site  Editor@Kaumudi  |  Marketing  Print Advt rates  |  Calendar 2012        Go!    
 
 
October 18, Wednesday 2017 12:16 AM       

       HEADLINES: CPM prefers Modi to congress: Antony                                              Amit Shah to join 'Janaraksha Yatra' on its last day in Thiruvananthapuram                                              A V Unnikrishnan Namboodiri new Sabarimala melshanthi                                              Scooter rider dies after being run over by lorry                                              Gold worth Rs. 29 lakh seized at Nedumbassery                                              MLA’s house sealed over unpaid loan                                              Taj Mahal built by blood, sweat of Indian labourers: Yogi Adityanath                                              BJP is India's richest party, Congress ranks second, says report                                              Time for Ayurveda-led 'health revolution': Modi                                              Nuclear war may break out at any time: N Korea                                              Panama Papers journo Caruana Galizia killed by Malta car bomb                                              Suicide bombers, gunmen kill 47 in attacks on Afghan forces                                              China to speed up construction of power project in PoK                                              India unlikely to play any 'four-day' Tests in near future                                              It feels like home playing in India: Tim Weah                                              Kumble turns 47, cricket fraternity tweets heartfelt bday wishes                                              Kaumudi Facebook
       WORLD Next Article: Las Vegas shooting: 18 more guns, explosives found at accused's place  
       US trio wins physics Nobel for spotting wrinkles in the cosmos
 
         Posted on :08:18:22 Oct 4, 2017
   
A A
       Last edited on:08:18:22 Oct 4, 2017
         Tags: US trio wins physics Nobel for spotting wrink
 
US astrophysicists Barry Barish, Kip Thorne and Rainer Weiss were awarded the Nobel Physics Prize Tuesday for the discovery of gravitational waves, offering a sneak peek at the Universe's very beginnings.
 
Predicted by Albert Einstein a century ago as part of his theory of general relativity, gravitational waves are "ripples" in space-time -- the theoretical fabric of the cosmos.
 
They are the aftermath of violent galactic events, such as colliding black holes or imploding massive stars, and can reveal events that took place billions of years ago.
 
The first detection of gravitational waves happened in September 2015 at the US-based Laser Interferometer Gravitational-wave Observatory (LIGO), where the three Nobel laureates worked.
 
"Their discovery shook the world," said Goran K Hansson, the head of the Swedish Royal Academy of Sciences which selects the Nobel laureates.
 
Announced in February 2016 to great excitement in the scientific community, the discovery was hailed as the historic culmination of decades of research.
 
In 1984, Thorne, now 77, and Weiss, 85, co-created LIGO at the prestigious California Institute of Technology, which has taken home 18 Nobels since the prizes were first awarded in 1901.
 
Barish, 81, joined the project in 1994 and helped bring it to completion. LIGO is now a collaboration between more than 1,000 researchers from 20 countries.
 
The 2015 observation was of two black holes smashing into each other some 1.3 billion light-years away.
 
"Although the signal was extremely weak when it reached Earth, it is already promising a revolution in astrophysics," the Nobel academy said.
 
"Gravitational waves are an entirely new way of following the most violent events in space and testing the limits of our knowledge."
 
In an interview on the Nobel prize website, Thorne said the discovery will enable scientists to see an "enormous number of things" in coming decades.
 
"We will see neutron stars collide, tear each other apart, we will see black holes tearing neutron stars apart, we will see spinning neutron stars, pulsars ... We'll be exploring basically the birth of the Universe."
 
Gravitational waves are minuscule, and near-undetectable because they interact very weakly with matter and travel through the Universe at the speed of light unimpeded.
 
The ripples emitted by a pair of merging black holes, for example, would stretch a one-million-kilometre (621,000-mile) ruler on Earth by less than the size of an atom.
 
Since 2015, the enigmatic ripples have been detected three more times: twice by LIGO and once by the Virgo detector located at the European Gravitational Observatory (EGO) in Cascina, Italy.
 
"Einstein was convinced it would never be possible to measure them," the jury said. "The LIGO project's achievement was using a pair of gigantic laser interferometers to measure a change thousands of times smaller than an atomic nucleus, as the gravitational wave passed the Earth."
Black holes emit no light, and can only be observed through gravitational waves that occur when they collide and violently merge -- offering scientists a means of studying them.
 
"If we could hear all the waves and not only the strongest ones, the entire universe would be full of music, like birds chirping in a forest, with a louder tone here and a quieter one there," the academy said.
 
Weiss was awarded half the prize, which comes with nine million Swedish kronor (about $1.1 million or 940,000 euros), while Barish and Thorne shared the rest.
"It's really wonderful. I view this more as a thing that recognises the work of about a thousand people," Weiss said shortly after the announcement.
 
"It took us a long time... two months... to convince ourselves that we had seen (something) that came from the outside and was truly a gravitational wave."
 
Thorne said he had expected the discovery to be honoured with a Nobel one day. "I didn't hope it would go to me personally, I hoped it would actually go to the entire collaboration ... which designed, built, and perfected the gravitational waves detector which made the discovery," he said.
 
Caroline Crawford, an astronomer at Cambridge University, told AFP the discovery "holds the potential for a completely new way of observing parts of the cosmos, the parts... completely obscured from our view."
 
On Wednesday, the chemistry prize will be announced, amid speculation it could go to a gene-editing technique known as the CRISPR-Cas9 DNA snipping tool, a type of genetic "scissors" used to cut out a mutated gene in a human embryo and replace it by a corrected version.
 
Or it could go to John Goodenough, a 95-year old electrochemist whose research led to the invention of the rechargeable lithium ion battery present in cellphones, computers and electric cars.
A A
       WORLD
Next Article: Las Vegas shooting: 18 more guns, explosives found at accused's place
 
 
WORLD HEADLINES
China to speed up construction of power project in PoK  
Suicide bombers, gunmen kill 47 in attacks on Afghan forces  
Panama Papers journo Caruana Galizia killed by Malta car bomb  
Nuclear war may break out at any time: N Korea  
Iraqi army launches operation in Kirkuk  
Chinese hegemony spreading across ASEAN  
Over 275 killed in Somalia bombing  
‘China-Pak Economic Corridor is a source of regional tensions’  
B'desh steps up security at India border over Rohingya fears  
Death toll rises to 189 in massive truck bomb blast in Mogadishu  
Dutch PM cycles to King's palace to inform on new govt. formation  
Relations with Pak improving: Trump  
India, Lanka agree to find permanent solution to fishermen issue  
11 Indian crew missing after vessel sinks off Philippines: Japan  
'US boots' on Pak soil out of question: Pak Army  
After US, Israel walks out of UNESCO  
Kidnapped, held 5 years, US-Canadian family freed in Pak  
ECP rejects registration of Hafiz Saeed's party  
No desire to increase US nuclear stockpile: Trump  
Brutal attacks on Rohingya meant to make their return almost impossible: UN report  
Gulf crisis may affect Qatar's security, India's economic interests  
Pak has 'genuine desire' for peaceful relations with India, but it takes two to tango: Pak Army chief  
US flies bombers over Korean Peninsula in show of force  
Militancy is being mainstreamed in Islamabad and it's not surprising, says Pak columnist  
Trump pledges support in fighting California wildfires  
 
Did Janaraksha yatra create road traffic blocks in Thiruvananthapuram city?
yes
 
no
 
don't know
 
 
 
Home Kerala India World Business Sports Sci&Tech Education Automobile CityNews Movies Environment Letters 
© Copyright keralakaumudi Online 2011  |  Reproduction in whole or in part without written permission is prohibited.
Head Office Address: Kaumudi Buildings, Pettah P.O, Trivandrum - 695024, India.
Online queries talk to Deepu Sasidharan, + 91 98472 38959 or Email deepu[at]kaumudi.com
Customer Service -Advertisement Disclaimer Statement   |  Copyright Policy