분류 전체보기 (42) 썸네일형 리스트형 Is language essential for thinking?(생각하는 데 언어가 필요할까?) Descartes said, "I think, therefore I am." As a human being, we think all the time. We think about almost everything: how the weather is like, everyday scedule, etc. But when we do, we usually use language to do so. In fact, language is used in thinking so much that it is hard to imagine that it is possible not to use it. I was interested by this topic and began researching, and found out about .. Why doesn't the atmosphere vanish into space?(대기가 날아가버리지 않는 이유) The space is very close to a vacuum. It has nearly nothing that's not a part of a celestial object, like Earth. Imagine a vacuum cleaner, which works by sucking dust from the floor. That's right! Vacuums have a characteristic in common: sucking objects. But actually, a vacuum doesn't 'suck' objects. It is just an extreme case when the density of matter in and outside a container is different. So.. Why do you shiver when you're cold?(추울 때 왜 몸을 떨까?) When you are cold, you body just starts to shiver. What is the reason that our bodies do so? When your body's temperature starts to drop, the brain orders muscles all around your body to repeat contraction and relaxation. Contraction is when a muscle tightens, and relaxation is the opposite. When muscles contract and relax, they produce heat. The brain orders the body to shiver to get this heat... Why is there more matter than antimatter?(세상에 물질이 존재하는 이유) At the moment of the Big Bang, space was filled with energy. In the middest of that, pair production and pair annihilation of matter and antimatter happened everywhere. But then, a question comes into our minds. How come only matter survived, when matter-antimatter pairs were created and destructed as pairs? According to CERN, about one out of a billion particles survived, and they were matter, .. Diving Reflex - What is it?(잠수 반사) When you suddenly go into a pool of cold water, your breath becomes rapid. Same is when you are sprayed with cold water. This kind of reaction seems useless. But then, why does this happen? This phenomenon is called a 'diving reflex'. Every species in the class Mammalia(mammals) have this reflex, occuring stronger in sea mammals than those living on the land. This diving reflex leads to some eff.. Why does the moon look bigger near the horizon?(달에 대한 착시현상) In 2017, when I was on a trip with my family, I noticed that the moon looked way much bigger than it usually was. I wondered why and decided to research more about the phenomenon when I got home. There is no proven reason to why the moon looks bigger near the horizon. However, one thing is for sure: that it has something to do with our brain's functions. The current most widely accepted theory i.. What is Piezoelectricity?(피에조 전기) Piezoelectricity is the electric charge created when mechanical force is applied to certain solid materials such as crystals, some types of ceramic, DNA, bones, etc. In this text I am going to explain how piezoelectricity in crystals work. Let's say that the crystal has a tetrahedron structure. In normal situations, it will have a neutral charge of 0, since all of it's dipole moments cross out e.. Quantum Computing - How It Works(양자컴퓨터의 원리) Famous IT companies like IBM, Google, Intel, ....etc are jumping into making quantum computers, and are making some success. But then, what are quantum computers and why are they so important? In this page, I am going to explain qubit-based quantum computers. A normal computer calculates and stores data using a system called 'bits'. A bit can be either on or off, or in numbers, 1 or 0. An n-bit .. 이전 1 2 3 4 5 6 다음
