And for the record, that's faster than the speed of light. But wait. Doesn't that break one of the Laws of Physics?Even school children know that you quote: you can't go faster than the speed of light.But actually there is a loophole there. You see nothing can go faster than light, nothing being empty space.
記錄顯示那比光速更快。但是且慢。那會打破其中一條物理學定律嗎?就連學校的學生都知道的那條定律:世界上最快的是光速。但實際上,這句話有漏洞。沒有什么快于光速,而你所說的沒什么是指空無一物的空間。
Don't worry. This idea gives even the best minds in science a headache. But it's critical to understanding the early universe. Scientists think it took less than a millionth of a millionth of a millionth of a millionth of a second for the universe to expand from the size of an atom to a baseball.That may not sound like much, but it's like a golf ball expanding to the size of the earth in the same amount of time.
別擔心,就算是最聰明的科學家也會對此感到頭疼。然而了解早期的宇宙確實至關重要。科學家們認為如原子般大的宇宙膨脹到棒球大小需要的時間不超過萬萬萬萬億分之一。也許聽起來不是很形象,但這相當于花同樣的時間由高爾夫球膨脹到地球樣大小。
That means it was expanding faster than the speed of light. That's fast. So many things were happening so fast in the early universe. Because everything was so close together that we needed a new unit of time to describe things.
這就意味著宇宙膨脹速度快于光速。那非常快。在早期的宇宙,許多事件發生得太快。因為每事件緊挨著發生,所以需要一個新的時間單位來描述物質的運動。
It's called 'Planck Time'. To understand just how short of 'Planck Time' is, consider this, there're more units of 'Planck Time' in one second than all the seconds since the Big Bang. The math is mind-blowing. There're more than 31 million seconds in a year and it's been 14 billion years since the Big Bang. So multiply 31,556,926 by 14 billion and what you get. It's a really big number.
新的時間單位就是“普朗克時間”。要明白普朗克時間有多短,先要知道普朗克時間每秒包括的單位比大爆炸以來所有秒包括的單位都要多。計算起來很費腦筋。每年有3千多萬秒,自大爆炸已經有140億年了。140億乘以31,556,926等于多少。一個巨大的數字。
It's a time scale that's so small that all human intuition goes out (of) the window. If we look at our watches and measure one second, we can ask how many 'Planck Times' is that. Well, it is a billion billion billion billion billion 'Planck Times'.
普朗克時間的時間段太小,超出了人類洞察力范疇。如果看表估量一秒鐘,我們可以問這一秒鐘的普朗克時間是多少。這么說吧,這一秒等于10的36次方普朗克時間。
So, now the Big Bang is only a few 'Planck Times' old in exploding mass of pure energy expanding faster than the speed of light. In the next few 'Planck Times', the universe as we know it will be born.
因此,大爆炸開始的一瞬大量純能量以快于光速的速率爆發膨脹,這個過程所用的普朗時間很短。接下來,在又一段很短的普朗克時間內宇宙就誕生了。
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