Why Does Time Go Forward?YouTube↗  IA↗(long shot)
Education  825.6K views 15.4K likes 641 dislikes   09 Jun 2014
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Korean Seonbeam
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There's nothing especially mysterious about a glass of water. Ten thousand trillion or
لايوجد شيء غامض حول كأس من الماء. عشرة آلاف تريليون من جزيئات الماء ترقص و تهتز بجنون في مقاييس صغيرة جدًا.
so water molecules, vibrating like crazy, dancing around on the smallest of scales, but contained by the walls of the glass, a little bit of gravity, and some hydrogen bonding.
لكنها محتواة في زجاج الكأس، القليل من الجاذبية وذرات الهيدروجين المترابطة.
It fits our expectations about the universe very nicely.
مما يتوافق مع ما نتوقعه من الكون بشكل مثالي.
And there's nothing surprising about watching a drop of ink swirl and spread through the
وليس هناك شيء مثير للدهشة حينما نشاهد قطرة الحبر تعوم وتنتشر في الماء السائل.
liquid, dissipating from a cloud of color to an even hue. It's just the way we expect
ثم يتبدد لونها ليصبح لون متوازن داخل الماء.
things to go.
هذا هو المتوقع حدوثه. ولو قطرنا قطرة الماء تلك مئات، آلاف أو حتى ملايين المرات لن نحتاج حتى أن نتوقع أن الشيء ذاته سيحدث، لأنه حتمًا سيحدث. على الأرجح!
If we dripped that drop a hundred, a thousand, or a million times, we'd not only expect to see the same thing happen. The same thing would happen. Probably. Thing is, there's nothing about the laws of physics that govern how all those molecules
لأنه ليس هناك شيء حتمي يمنع قوانين الفيزياء التي تتحكم بكل تلك الجزيئات أن تحدث بشكل عكسي!
move around that prevents the whole thing running in reverse. Then what makes this moment any different from the past? We know that today is different
السؤال الآن، مالذي يجعل هذه اللحظة الحالية مختلفة عن الماضي. نحن نعلم أن اليوم يختلف عن الأمس، لكن لماذا؟
from yesterday. But why? Physicists say that the universe tends toward disorder. A great
الفيزيائيين يقولون أن الكون يميل نحو الفوضى "السهم الزمني" يشير إلى مستقبل حيث الإنتروبي أكبر مما كان عليه في الماضي.
arrow of time points toward a future in which entropy is greater than it was in the past. Probably.
ربما! هذا هو القانون الثاني في الديناميكا الحرارية.
This is the second law of thermodynamics. Only, it's not a law like Newton's gravity.
إنه ليس قانوناً مثل قانون نيوتين للجاذبية، إنه قانون في الاحتمالات. أرمي العملة مليون مرة. هل ستسقط على نفس الجانب دائمًا؟
It's a law of probability. Flip a coin a million times, and will you ever get a million heads? No. But could you?
لا! لكن هل يمكنك فعل ذلك؟
Sure. There's no law of mathematics that says it can't happen. There's just so many more
طبعًا. لايوجد أي قانون رياضي يقول أن ذلك مستحيل الحدوث.
ways for it not to happen.
لكن هناك احتمالية أكبر أن ذلك لن يحدث. من الممكن أن نحصل على نفس الجانب 10 مرات أو حتى 100 مرة. لكن سرعان ما سيتغير الأمر.
Sure, we may get ten heads in a row, or maybe even 100 along the way. But it all evens out over time. This is the reason that bombs don't unexplode. It's the reason that we have waterfalls, and
هذا هو السبب في أن القنابل لا تعيد تفجرها،
not water-ups. And thankfully for you and me, this is the reason that all the air in
السبب أن لدينا شلالات مياه تسقط للأسفل بدلًا من أن تذهب للأعلى،
the room doesn't suddenly decide to hang out in one corner. The reason today is different from yesterday, and tomorrow will be different than today,
السبب أن اليوم غير عن الأمس، وغدًا سيكون مختلفًا عن اليوم هو أنه منذ البدء منذ الانفجار العظيم
is that since the very beginning, since the Big Bang itself, everything has been getting messier.
كل شيء كان يزداد فوضويةً. نحن نعلم أن الإنتروبي يزداد، نعلم أن الوقت يسير في اتجاه واحد.
We know that entropy increases. We know that times moves in one direction. Probably.
ربما!
But WHY was the universe ever ordered to begin with? Why was entropy so small at the beginning?
لكن لماذا كان الكون منظمًا في البداية؟ لماذا قبل 13.7 مليار سنة استطاع الكون أن يحصل على نفس الجانب من العملة مليون مرة!
Why is it, 13.7 billion years ago, the universe could flip a coin one million heads in a row? We don't know. It's one of the great unsolved mysteries in physics.
لانعلم! إنه أحد أعظم الأمورغموضًا في الفيزياء. وحينما نجد حلًا له، سيكون لدينا أخيرًا الجواب لأحد أغرب الأسئلة في العلوم. إنه سؤال غريب لأننا حدسيًا نعرف الجواب.
When we solve it, we'll finally have an answer for one of the strangest questions in science. It's strange because we all already intuitively know the answer. The universe fits our expectations
الكون يوافق توقعاتنا، لأن توقعاتنا كتبها الكون. هل سيأتي يوم نحل فيه لغز النظام؟
because our expectations were written by the universe. Will we ever solve the mystery of order? Who knows? Tomorrow's another day, different from
من يعلم! غدًا سيكون يوم مختلف مختلف عن كل ماسبقه ومليء بالمفاجآت. ربما
all the rest, and full of surprises.
كن فضوليًا. ترجمة فريق أترجم @autrjim
Probably.
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