Statistics
How Often Do Rare Events Happen: Poisson Distribution
Why do call-center phones arrive in uneven bursts even when the average is steady? This article walks through the Poisson distribution—from its single-parameter formula and conditi
Articles to explore
You are browsing the English interface. Articles without a published translation are clearly marked and open in Korean.
810 articles found
Economics
The First Bite Tastes Best: The Law of Diminishing Marginal Utility
The law of diminishing marginal utility describes how the extra satisfaction from getting one more of something keeps shrinking. We look at what marginal utility means, how the ide
Statistics
Reading the World Through Numbers: The Power and Potential of Public Opinion Polls
Public opinion polls are powerful tools for collecting and analyzing our thoughts and opinions in modern society. They play an important role across politics, the economy, and soci
General knowledge
How Glasses and Vision Correction Work: Correcting Nearsightedness, Farsightedness, and Astigmatism
The main types of vision problems such as myopia, hyperopia, astigmatism, and presbyopia, the science of lenses, materials, and coatings, how each problem is corrected, other corre
Information technology
How to Integrate and Develop with APIs
What an API (application programming interface) is, how Korean services such as Naver, Kakao, and the Public Data Portal use APIs, how to get an API key and connect to an API, and
Food & nutrition
Cooking Food Sealed in a Bag Under Water: Sous Vide
Sous vide is a cooking method in which food is vacuum-sealed in a plastic bag and cooked slowly for a long time in water held at a precise temperature. This article covers how it c
Library & information science
A Complete Guide to the Korean Decimal Classification (KDC): How Do Libraries Classify Books?
A handy reference to the Korean Decimal Classification (KDC, 6th edition) used in Korean public and school libraries: how main classes, divisions, sections, and subdivisions work,
Information technology
Efficient Database (DB) Management Strategies
In modern society, data has become a core asset for businesses and organizations. How data is collected, stored, and managed can determine the success or failure of a business. In
Physics
Exploring Dark Matter: In Search of the Universe's Hidden Secrets
The universe remains full of mysteries, and dark matter is among its greatest enigmas. Although invisible, dark matter is estimated to make up approximately 27% of the universe, an
Robotics
The Easy Things Are the Hardest: Moravec's Paradox
Why can computers beat chess champions yet struggle to pick up a cup? This article covers the origins of Moravec's paradox, its evolutionary explanation, examples from robotics, an
Physics
Relativity: The Theory That Redefined Science
Relativity is a groundbreaking theory that fundamentally changed the paradigm of physics. Proposed by Albert Einstein, it challenged traditional concepts of time and space. Relativ
Economics
Better Off Sharing Even When You Excel at Everything: Comparative Advantage
Comparative advantage is the principle that each party gains by specializing in what it can produce at a lower opportunity cost than others. This article covers the basic concept,