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Sunday, October 8, 2017

Re: [mukto-mona] Nobel Prize in Physics 2017 // Gravitational Waves Detected

Plausible! However, a prize was given on basis of a mere scientific belief... that the sound really came from a distant collision. We are lucky that it has happened in our life time and the second one might not happen in another thousand years? I do find some flaws in this logic. It would be nice to know what kind of background noise you get in these detector machines? What is the threshold to be counted as the real one?

On Sunday, October 8, 2017 12:59 PM, "Dristy Pat [mukto-mona]" <> wrote:


My guess would be, as universe dilates, the probability of colliding black holes will be rare. But, this is an accident, and accident can happen again; who knows?  

On Sun, Oct 8, 2017 at 10:57 AM, Shah Deeldar [mukto-mona] <> wrote:
As much as I love science and its mind boggling accurate predictions about what phenomena can be detected and what not, I do have doubts about people detecting the gravitational waves after so many thousands light-years as a consequence of two giant black holes colliding with each other. Great Science! Einstein is right! The question is rather, given the vastness of universe and its constant numerous collisions and new galaxies/stars formations , why not more gravitational waves are being detected in every hour or every few months? How do we verify that these scientists got it right. Where is the second experimental proof? Please enlighten me!

On Saturday, October 7, 2017 7:40 PM, "Dristy Pat [mukto-mona]" <> wrote:

It's very informative presentation. While I was listening, all could think of is, how self-governing our universe is. Here, everything happens for reason, and everything is happening based on scientific principles.

Take home message is, no one knows the origin of the universe, and there is no end of the universe, but, there is an end to our sun and the earth.

The demise of our earth is predicted in every religious scriptures, which I heard from a priest as a child.The priest was reading from a religious scripture to explain what will happen prior to that. All I remember, he said - the sun will come very close to the earth, and everything will perish after that. It was nice to get a scientific reason for that process from this presentation. It was enjoyable.


On Fri, Oct 6, 2017 at 10:20 PM, Mahbub Khan [mukto-mona] <> wrote:
Nobel Prize in Physics 2017

3 October 2017
The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics 2017 with one half to
Rainer Weiss 
LIGO/VIRGO Collaboration
and the other half jointly to
Barry C. Barish 
LIGO/VIRGO Collaboration
Kip S. Thorne
LIGO/VIRGO Collaboration
"for decisive contributions to the LIGO detector and the observation of gravitational waves"
Gravitational waves finally captured
On 14 September 2015, the universe's gravitational waves were observed for the very first time. The waves, which were predicted by Albert Einstein a hundred years ago, came from a collision between two black holes. It took 1.3 billion years for the waves to arrive at the LIGO detector in the USA.
The signal was extremely weak when it reached Earth, but is already promising a revolution in astrophysics. Gravitational waves are an entirely new way of observing the most violent events in space and testing the limits of our knowledge.
LIGO, the Laser Interferometer Gravitational-Wave Observatory, is a collaborative project with over one thousand researchers from more than twenty countries. Together, they have realised a vision that is almost fifty years old. The 2017 Nobel Laureates have, with their enthusiasm and determination, each been invaluable to the success of LIGO. Pioneers Rainer Weiss and Kip S. Thorne, together with Barry C. Barish, the scientist and leader who brought the project to completion, ensured that four decades of effort led to gravitational waves finally being observed.
In the mid-1970s, Rainer Weiss had already analysed possible sources of background noise that would disturb measurements, and had also designed a detector, a laser-based interferometer, which would overcome this noise. Early on, both Kip Thorne and Rainer Weiss were firmly convinced that gravitational waves could be detected and bring about a revolution in our knowledge of the universe.
Gravitational waves spread at the speed of light, filling the universe, as Albert Einstein described in his general theory of relativity. They are always created when a mass accelerates, like when an ice-skater pirouettes or a pair of black holes rotate around each other. Einstein was convinced it would never be possible to measure them. 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.
So far all sorts of electromagnetic radiation and particles, such as cosmic rays or neutrinos, have been used to explore the universe. However, gravitational waves are direct testimony to disruptions in space-time itself. This is something completely new and different, opening up unseen worlds. A wealth of discoveries awaits those who succeed in capturing the waves and interpreting their message.
Nobel Prize in Physics 2017:
Popular Science Background:

Scientific Background:

Big Bang Sciences: Simplified Explanations by Dr. Mahbub Khan:


Posted by: Shah Deeldar <>

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