Author
Abdul Moiz (Writer for International news PK)
One thing that distinguishes a human
being from other species is the eagerness to acquire knowledge, to learn and to
unveil the clandestine enigmas of universe. While other species fight for survival.
Territory and food, humans through the courtesy of our brains, are swiftly
progressing towards betterment
The most complex phenomena in nature
are governed by its simple laws, which are, in turn, governed by some
fundamental forces. And to comprehend these forces completely will be the
ultimate discovery for our species.
Man, applying the principle of
“Necessity is the mother of invention”, exploited the whole world for his gain.
When he felt cold, he toiled to find a source of heat and discovered fire. When
he felt hungry, he found out ways of hunting and he tore up the land and
discovered farming. Similarly, when he felt thirsty he discovered the
importance of water. And most important of all, when he got tired of dragging
his stuff, he seated the wheel, discovery that would change the world in the
years to come.
As a matter of fact, man starts
discovering thing-s as soon as he first opens his eyes. And now, finally, man
has discovered gravitational waves, which is perhaps the biggest discovery in
field of physics in decades.
If you drag your hand through a still
pool of water, you’ll notice that waves follow in its path and spread outward
through the pool. Similarly, when you drop some pebbles in water, they make
waves the bigger the object thrown, the greater is the wave produced .a long
time ago, an extremely smart guy named Einstein said that stars and planet s in
the solar system should make waves (ripples) in space, and he used some really
cool math to explain why he thought it was so .Many smart people studied
Einstein’s assertions and came to conclusions that he was right. But scientists
were never able to see those ripples before.
Albert Einstein predicted the existence
of gravitational waves in 1916, as part of his theory of relativity. He said
massive objects moving in space would cause “ripples” in space time- or
gravitation waves. And after continuous efforts by scientists, these waves have
been detected. This was possible by the construction of LIGO (Laser Interferometer Gravitational Wave Observatory).In this machine, a pair of
lasers is split and sent down a pair of long perpendicular tubes in different directions,
each precisely the same length. The two beams bounce off mirrors and recombine
back at the base. The light waves come back lined up in such a way that they
cancel each other out. But when a gravity wave comes long it changes the
distance wave comes along it changes the distance between mirrors. One arm of
LIGO becomes a bit longer and other arm a bit shorter. As a result of
difference in length of arms, waves do not cancel each other out when add in
conjoined beam. Some light reaches the detector in the end. The measure of intensity
of that light is the measure of gravitational waves.
For one gravitational wave were the
final predictions from Einstein’s theory of general relativity which was yet to
be confirmed.
Thanks to discovery, we will be able to
explore and discover the universe in totally different way. Instead of
observing the universe with telescope we will now be able to study it with gravitational
waves. Some even believe that because of this discovery, we will look further
back in time, even as back as the time of big bang.
Because
of this progression, we will be able to figure out how gravity actually works.
And finally this discovery can help physicists develop the theory of everything-one
that unifies the four forces of nature. Had Albert Einstein been living today,
I would have loved to see his face. Let’s hope this discovery turns out to be appositive
step for progression of science and humanity
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