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Date 2020-05-29

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A deceptively simple question, yet it is the key to understanding the secrets of the cosmos. A lot of people are trying to understand how time
works. And that’s a huge question because there are a lot of different aspects to it. A lot of them go back to Einstein and space-time and how
we measure time using clocks. But despite all the tools and ways of measuring time, the biggest question to ponder is, what are we
measuring? When we describe motion, we do so as a function of time, 10 meters per second, 100 miles per hour. But the mathematical
description of velocity is arguable/ unless we can define time (slow) The concept of time may emerge from a universe that, in the beginning, is
utterly static. Is time something that physically exists or is just in our heads. Our understanding of time started getting complicated, thanks to
Einstein. His theory of relativity tells us that time passes for everyone but doesn’t always pass at the same rate for people in different
situations. Like those traveling close to the speed of light or orbiting a supermassive black hole. Einstein resolved the malleability of time by
combining it with space, to define space-time. Einstein's theory seemed to confirm that time is woven into the very fabric of the universe. But
there’s a big question it didn’t fully resolve: why is it we can move through space in any direction, but through time in only one? In other words,
it feels as though time flows, in the sense that the present is constantly updating itself. We have a deep intuition that the future is open until it
becomes present and that the past is fixed. As time flows, this structure of fixed past, immediate present, and open future get carried forward
in time. We call this the “Arrow of Time”. And it is also known as Linear Time, and it’s something everyone is familiar with and agrees upon.
This is the particular aspect of time that most of us are interested in: the fact that the past is different from the future. We remember the past
but we don’t remember the future. There are irreversible processes. Some things happen, like you can turn an egg into an omelet, but you
can’t turn an omelet into an egg. And we sort of understand that halfway, the arrow of time is based on ideas that go back to Ludwig
Boltzmann, an Austrian physicist in the 1870’s. He figured out this thing called “Entropy”. Also known as the Second Law of Thermodynamics.
Entropy is just a measure of how disorderly things are. And it tends to grow. Entropy goes up with time, things become more disorderly. So, if
you neatly stack papers on your desk, and you walk away, you’re not surprised if they turn into a mess. You’d be very surprised if a mess
turned into neatly stacked papers. That’s entropy and the arrow of time. Entropy goes up as it becomes messier. So, Boltzmann understood
that and he explained how entropy is related to the arrow of time. But there’s a missing piece to his explanation, which is, why was the entropy
of the Universe so low in the first place? Why the papers were neatly stacked in the universe? Our observable universe begins around 13.7
billion years ago in a state of exquisite order, exquisitely low entropy. It’s like the universe is a wind-up toy that has been sort of puttering
along for the last 13.7 billion years and will eventually wind down to nothing. But why was it in such a weird low entropy unusual state? That is
what most of the physicists are trying to tackle. They’re trying to understand cosmology, why the Big bang had the properties it did. And it’s
interesting to think that it connects directly to our kitchens and how we can make eggs, how we can remember one direction of time, why
causes precede effects, why we are born young, and grow older. It’s all because of entropy increasing. It’s all because of the conditions of the
big bang. So the Big bang starts it all. But there should be something before the Big Bang, something that makes it happen. Like, if you find an
egg in your refrigerator, you’re not surprised. You don’t say, “that’s a low-entropy configuration. That’s unusual because you know that the egg
is not alone in the universe. It came out of a chicken, which is part of a farm, which is part of the biosphere, and so on. But with the universe, it
doesn’t have that appeal to make. You can’t say that the universe is part of something else. But that’s exactly what it means. It fits in with a
line of thought in modern cosmology that says that the observable universe is not all there is. It’s part of a bigger multiverse. The Big Bang
was not the beginning. And if that’s true, it changes the question we’re trying to ask. It’s not, “Why did the universe begin with low entropy?”
it’s, why did part of the universe go through a phase with low entropy? And that might be easier to answer.

Matched Source

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Title: RaySolution: What is the Purpose of Time?
a lot of them go back to einstein and space-time and how we measure time using clocks. but the particular aspect of time that i’m
interested in is the arrow of time: the fact thatis time money? yes – in this physical world we get compensated for our work and sell our
talents and time for a paycheck.

http://raysolution.blogspot.com/2012/08/what-is-purpose-of-time.html

Similarity 13%
Title: English Language: Time Is But a Stubborn Illusion - Sneak Peek...
when we describe motion, we do so. as a function of time, 10 meters per second, 100 miles per hour. but the mathematical description of
velocity.to truly grasp the idea of time, we must take a step. back and ask, what is light? so journey with me to the sun. light travels from
the sun to the...

https://www.watch-listen-read.com/english/Time-Is-But-a-Stubborn-Illusion-Sneak-Peek-Genius-id-436113

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Title: Does time exist? | TED
but our understanding of time started getting complicated thanks to einstein. his theory of relativity tells us that time passes for everyone,
but doesn’t always pass at the same rate for people in different situations, like those travelling close to the speed of light or orbiting a
supermassive black hole.

https://www.ted.com/talks/andrew_zimmerman_jones_does_time_exist/transcript

Similarity 13%
Title: TED-Ed - Does time exist? | Facebook
his theory of relativity tells us that time passes for everyone, but doesn’t always pass at the same rate forthere have been many attempts
—none yet proven— and they treat time in different ways. oddly enough, one contender called the wheeler-dewitt equation, doesn’t include
time at all.

https://www.facebook.com/TEDEducation/videos/does-time-exist/1064688653700106/

Similarity 7%
Title: Time Quotes IV
in other words, it feels as though time flows, in the sense that the present is constantly updating itself.as time flows, this structure of fixed
past, immediate present and open future gets carried forward in time. this structure is built into our language, thought and behavior.

http://www.notable-quotes.com/t/time_quotes_iv.html

Similarity 7%
Title: a little time | GEFRIN - YouTube
we have a deep intuition that the future is open until it becomes present and that the past is fixed. as time flows, this structure of fixed past,
immediate present and open future gets carried forward in time. this structure is built into our language, thought and behavior.

https://www.youtube.com/watch?v=-YJtR-qQuaY
Similarity 5%
Title: Omelette back into egg | About Time
we remember the past but we don’t remember the future. there are…we know how to measure time using clocks, but there is another
aspect of time, what we call the arrow of time. past is different from the future.

https://c00185653.wordpress.com/2014/11/14/omelette-back-into-egg/

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Title: What is time? An interview with Sean Carroll | Theory Of Time
and we sort of understand that halfway. the arrow of time is based on ideas that go back to ludwig boltzmann, anwired.com: so if the arrow
of time is based on our consciousness and our ability to perceive it, then do people like you who understand it more fully experience time
differently...

http://theoryoftime.com/wordpress/?p=285

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Title: PS Chapter 18 Flashcards | Quizlet | YOU MIGHT ALSO LIKE...
also known as the second law of thermodynamics.a quantitative measure of disorder. it increases as the disorder increases. it can be
calculated mathematically from the probability of obtaining the system in its current state.

https://quizlet.com/15036311/ps-chapter-18-flash-cards/

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Title: entropy - Bing ??
entropy is just a measure of how disorderly things are.the results indicate that the maximum entropy pdf is simple and the parameters are
easy to be determined from the observed data .

https://cn.bing.com/dict/search?q=entropy&FORM=BDVSP6&mkt=zh-cn

Similarity 4%
Title: A question regarding Entropy and Time, page 1 | Forum
second law of thermodynamics: entropy goes up with time, things become more disorderly.to everyone, thanks for taking the time to reply.
this thread is more for speculation rather than rewriting the book ok entropy. for me i think that my view lies with the actual meaning of
entropy.

http://www.abovetopsecret.com/forum/thread547021/pg1

Similarity 4%
Title: What Is Time? What Would the World Be Like Without It?
you’d be very surprised if a mess turned into neatly stacked papers. “basically, our observable universe begins around 13.7 billion years
ago in a state of exquisite order … it’s like the universe is a wind-up toy that has been sort of puttering along for the last 13.7 billion years
and will eventually wind...

https://www.theepochtimes.com/what-is-time-what-would-the-world-be-like-without-it_615615.html

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Title: Capcanele timpului | The entropy time arrow
basically, our observable universe begins around 13.7 billion years ago in a state of exquisite order, exquisitely low entropy. its like the
universe is a wind-up toy that has been sort of puttering along for the last 13.7 billion years and will eventually wind down to nothing.
https://www.scribd.com/document/62391110/Capcanele-timpului

Similarity 4%
Title: What Is Time? One Physicist Hunts for the Ultimate Theory.
it’s like the universe is a wind-up toy that has been sort of puttering along for the last 13.7 billion years and will eventually wind down to
nothing.sean carroll is a theoretical physicist at caltech where he focuses on theories of cosmology, field theory and gravitation by studying
the evolution of...

http://chanchalmondal.blogspot.com/2011/05/what-is-time-one-physicist-hunts-for.html

Similarity 3%
Title: 33 Entropy Quotes - Inspirational Quotes at BrainyQuote
and it's interesting to think that connects directly to our kitchens and how we can make eggs, how we can remember one direction of time,
why causes precede effects, why we are born young and grow older.

https://www.brainyquote.com/topics/entropy-quotes

Similarity 3%
Title: Why Are Mangos So Tasty? - Biology - Science Forums
that's unusual,' because you know that the egg is not alone in the universe. it came out of a chicken, which is part of a farm, which is part
of the biosphere, etcso the evolutionary biological answer to “why are mangos so tasty” is that the ancient primates that didn’t like such
tastes didn’t thrive as well as our ones that...

http://www.scienceforums.com/topic/27840-why-are-mangos-so-tasty/

Similarity 3%
Title: WHY DOES THE UNIVERSE LOOK THE WAY IT DOES? | Edge.org
it's not going to go back to being low entropy.then you can start to try to understand why it had such a low entropy to begin with. i actually
think that the fact that we can observe the early universe having such a low entropy is the best evidence we currently have that we live in a
multiverse, that...

https://www.edge.org/conversation/sean_carroll-why-does-the-universe-look-the-way-it-does