如果你撥動一條小提琴的琴弦，琴弦振動的同時，亦驅使它附近的空氣粒子振動，形成聲波在空氣中傳播，這就是為什麼你可以聽到琴音。不過，這樂音不會持久。在發出聲波的同時，琴弦會損失它振動的能量。所以，琴弦的振動會衰減，琴音亦然。有趣的是，受擾動的黑洞都有類似的現象…
Category: news feed
-
铃荡：黑洞振荡的音乐
如果你拨动一条小提琴的琴弦，琴弦振动的同时，亦驱使它附近的空气粒子振动，形成声波在空气中传播，这就是为什么你可以听到琴音。不过，这乐音不会持久。在发出声波的同时，琴弦会损失它振动的能量。所以，琴弦的振动会衰减，琴音亦然。有趣的是，受扰动的黑洞都有类似的现象…
-
Fingerprints: The Key to Our Individuality
Before we delve into the complexities of blood tests and DNA analyses to identify who we are, society has already made a simple yet straightforward method that we always see in movies and when we are crossing the border: our fingerprints which are also known as “friction ridge skin”. Just like our faces, fingerprints are key to our individuality and identity. But have you ever wondered why each of us has unique fingerprints?…
-
Fingerprints: The Key to Our Individuality
Before we delve into the complexities of blood tests and DNA analyses to identify who we are, society has already made a simple yet straightforward method that we always see in movies and when we are crossing the border: our fingerprints which are also known as “friction ridge skin”. Just like our faces, fingerprints are key to our individuality and identity. But have you ever wondered why each of us has unique fingerprints?…
-
指紋：判別個人身分的特徵
在使用血液測試和DNA分析這些複雜方法之前，我們早已有一套簡單直接的方法來辨別身分，那就是我們經常在電影中看到或是通關會用到的指紋分析。指紋又稱為「皮嵴」（friction ridge skin），像我們的容貌一樣，它是我們獨一無二的特徵。可是你有想過為甚麼每個人的指紋都不同嗎？…
-
指纹：判别个人身分的特征
在使用血液测试和DNA分析这些复杂方法之前，我们早已有一套简单直接的方法来辨别身分，那就是我们经常在电影中看到或是通关会用到的指纹分析。指纹又称为「皮嵴」（friction ridge skin），像我们的容貌一样，它是我们独一无二的特征。可是你有想过为甚么每个人的指纹都不同吗？…
-
指紋：判別個人身分的特徵
在使用血液測試和DNA分析這些複雜方法之前，我們早已有一套簡單直接的方法來辨別身分，那就是我們經常在電影中看到或是通關會用到的指紋分析。指紋又稱為「皮嵴」（friction ridge skin），像我們的容貌一樣，它是我們獨一無二的特徵。可是你有想過為甚麼每個人的指紋都不同嗎？…
-
指纹：判别个人身分的特征
在使用血液测试和DNA分析这些复杂方法之前，我们早已有一套简单直接的方法来辨别身分，那就是我们经常在电影中看到或是通关会用到的指纹分析。指纹又称为「皮嵴」（friction ridge skin），像我们的容貌一样，它是我们独一无二的特征。可是你有想过为甚么每个人的指纹都不同吗？…
-
Demystifying Wordle: A Crash Course in Information Theory
The game Wordle took the world by storm last year – you might have seen your friends posting green and yellow boxes on social media, claiming that they have solved this daily word puzzle in three guesses, or that dreaded “X/6,” which means that they didn’t manage to crack it. When one considers what first word to guess, it might be tempting to randomly put a five-letter word at the beginning, but this can actually be reduced to a scientific question…
-
Demystifying Wordle: A Crash Course in Information Theory
The game Wordle took the world by storm last year – you might have seen your friends posting green and yellow boxes on social media, claiming that they have solved this daily word puzzle in three guesses, or that dreaded “X/6,” which means that they didn’t manage to crack it. When one considers what first word to guess, it might be tempting to randomly put a five-letter word at the beginning, but this can actually be reduced to a scientific question…