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Making it count
Mostly a fitness blog, with some motivation and some personal stuff.
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Definitely not a Blue Northern .
Nature’s Rave
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I have heard of using toys in bed, but this is crossing the line..
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O.O
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“So my friend gave her rabbit a cherry” … - Imgur
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#cartoons #decepticons #transformers #starscream #megatron #airplanemode #nochill
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crucifixes with super buff-looking Jesuses are always odd to me, like damn did Jesus die for our gainz as well?
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GMO
What's the big deal with GMO and why do people think "GMO food" should be labeled? Would you prefer food with pesticide residue or GMO based food with far less pesticide residue?
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No #boobies on #valentines ??? Here’s 2. Pair #valentinesday
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If the guy who named “Walkie talkies” named other things
Defibrillator: The Hearty Starty
Forks: Stabby Grabbies
Spoons: soupy scoopies
Steak knives: meatie-eaties.
Farts: booty tooty.
Diarrhea: soupy poopies
Condoms: weenie beanies/cocky sockys
Pregnancy test: Maybe baby
Bras: Tittie Mitties
Napkins: swipie wipies/nosie blowsies/wankie hankies
Socks: feetie heaties
x-ray specs: eyesie spysies
Toilet paper: poopie scoopie
Toilets: sitty shitty (X)
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Black Holes are not so Black (Part 3) - Gravitational Waves
The existence of Gravitational Waves have been confirmed. But you probably have heard that. In this post, we will break down this profound discovery into comprehend-able chunks.
This is going to be a amazing journey. Ready ?
Redefining Gravity
When we usually talk of Gravitation we are bound to think like Newton, where objects are assumed to exerting a force upon each other.
Like imaginary arrows of force in space. But this picture, although good for high school crumbled, with the advent of Einstein’s theory of Relativity.
What is the Space-Time Fabric?
Think of space-time fabric as an actual cloth of fabric. ( An analogy )
When you place an object on the fabric, the cloth curves. This is exactly what happens in the solar system as well.
The sun with such a huge mass bends the space-time fabric. And the earth and all the planets are kept in orbit by following this curvature that has been made by the sun.
Attributing to the various masses of objects, the way they bend this fabric also varies.
What are Gravitational Waves?
If you drop an object in a medium such as water, they produce ripples that propagate as waves through the medium.
Similarly, Gravitational waves are ripples in space-time fabric produced when you drag heavy objects through space time.
And the nature of these waves is that they don’t require a medium to propagate.
How do you make one?
Everything with mass/energy can create these waves.
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Two persons dancing around each other in space too can create gravitational waves. But the waves would be extremely faint.
You need something big and massive accelerating through space-time in order to even detect them.
And orbiting binary stars/black holes are valuable in this retrospect.
How can you detect them?
Let’s turn to the problem to detecting them assuming you do find binary stars/black-holes in the wondrous space to suite your needs.
Well, for starters you cannot use rocks/ rulers to measure them because as the space expands and contracts, so do the rocks. ( the distances will remain same in both the cases )
Here’s where the high school fact that the speed of Light is a constant no matter what plays an important and pivotal role.
If the space expands, the time taken for light to reach from A to B would be longer. And if it contracts, the time taken for it to reach from A to B would be smaller.
PC: PHDComics
By allowing the light waves from the contraction and expansion to interfere with each other, such as done in any interferometry experiment we can detect the expansion or contraction. Voila!
And this is exactly what they did! ( on a macroscopic level ) at LIGO (Laser Interferometer Gravitational-Wave Observatory)
14 September 2015
Two Black Holes with masses of 29 and 36 solar masses merged together some 1.3 Billion light years away.
Two Black Holes colliding is the header animation of the ‘Black Holes are not so Black Series’, in case if you haven’t noticed.
The merger of these two black holes results in the emission of energy equivalent to 3 solar masses as Gravitational Waves.
This signal was seen by both LIGO detectors, in Livingston and Hanford, with a time difference of 7 milliseconds.
And with the measurement of this time difference, physicists have pronounced the existence of Gravitational Waves.
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All this is most certainly easily said than done and requires meticulous and extensive research, not to mention highly sensitive instruments.
Had they not have measured this time difference, we might have had to wait for the merger for more massive black holes to collide and maybe even build more sensitive instruments to detect these waves.
And Einstein predicted this a 100 years back!
Mind Blown!
Note: Hope you are able to understand and appreciate the profundity of the discovery done by mankind.
** All animations used here are merely for Educational purposes. If you have any issues, please write to us at : [email protected]
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I wish she had never been discovered. I can't believe people listen to that noise...
5 Years ago today, Kanye West dropped ‘Monster’ giving Nicki one of the most acclaimed verses in Hip-Hop History.
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