Science Notes (26) 썸네일형 리스트형 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 .. The Standard Model(표준모형) Over time, scientists have tried to hack matter into smaller pieces, to find what the world is made out of. Empedokles(490~430 B.C.) first thought that everything in the world were combinations of 4 things: fire, water, air, and soil. That idea has been accepted for centuries, until Democritus thought of atoms, the most elementary matter that could not be broken. After that, people found out tha.. Why do Molecules Have Color?(분자구조에 따른 색) When a light in the visible spectrum reaches our eyes, we percieve it as a 'color'. Objects absorb light of a spectrum, and reflect the 'opposite' spectrum. For light in the visible spectrum, red is opposite to cyan, yello to blue, and green to magenta. For example, when an object absorbs red, it reflects cyan, and therefore we see it as having a cyan color. Objects that do not absorb light in t.. Escape Velocity(탈출속도) Escape velocity is the speed that an object(let's say a rocket) needs to acheive in order to completely travel out of the area of a planet's gravity. It depends on the radius(if the rocket is launched from the surface), and the mass of the planet. The mass of the rocket does not affect the speed it needs to achieve. But why is it like this? To figure it out, the method of kinetic and potential e.. Reflections Occur in Transparent Window as well(유리창에서 일어나는 빛의 반사) When you look out of your window at night, you'll see yourself's reflected image, just as if you were standing in front of a mirror. Why does this happen? And why doesn't it happen during daytime? This is due to the reflection occurring in the window. My guess, before doing some researches about the topic, was that a transparent window also has some features of a mirror, and that the reason the .. Why is Mercury's Melting Point so Low?(수은의 녹는점이 낮은 이유) Mercury has a incredibly low melting point - unlike most metals(Tungsten: 3,422C, Iron: 1,538C). Its melting point is about -38.83 in celcius, even lower than that of water. Then, what makes this matter so special? Why is it so easily melted, even though it's a metal? The answer is: the bonding force between Mercury atoms is too weak. Metals can make only a 100 kinds of bonds, when there are mor.. Can Light from Outside the Hubble Sphere be Observed?(허블 지름) - from research in 10/09/29 - What is the Hubble Sphere? Currently, the universe is known to be expanding at an increasing rate. It means that the farther away from us(observer), the faster it expands. The universe is expanding at about 70 killometers per second per megaparsec (2.2685455 × 10-18 hertz). A megaparsec is an incredibly long amount of distance, and is about 3.085677581E+24 (or 3.085.. Why Can't Transverse Waves Go Through Liquid?(유체에서 파동의 성질) At the start of this year, I learned that scientists(geologists) were able to find out the Earth has a liquid core by using two body waves: P-waves and S-waves. These two waves are different in characteristics. There are two types of waves. One is a transverse wave, like the S-wave, and the other is called a longitudinal wave(P-wave). A transverse wave is a type of wave that is known to a lot of.. 이전 1 2 3 4 다음
