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Library & information science
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,
General knowledge
Brandolini's Law is the rule of thumb that refuting a false claim takes far more effort than producing it. We look at where the law came from, why rebuttals are so hard, older insi
Physics
Plasma is the 4th state of matter, following solids, liquids, and gases, and is a unique state with electrical and high-temperature characteristics. These characteristics give plas
Chemistry
Avogadro’s number is the number of particles in one mole of a substance, about 6.02 × 10²³. This piece explains what it means, ways to grasp its size, how Avogadro, Cannizzaro, Los
Library & information science
This time, we will explore the concepts of primary (1st-order) and secondary (2nd-order) sources, which are commonly discussed in library and information science. These are among t
General knowledge
With advances in modern agricultural technology and the widespread use of protected cultivation (greenhouse growing), we live in an era when lettuce, cucumbers, and tomatoes are av
Information technology
Autonomous driving technology is one of the topics attracting considerable attention in modern society. This technology enables vehicles to perceive their surroundings and drive on
Library & information science
This time, I would like to prepare material on the concept and characteristics of metadata. Alongside this, I will also briefly examine the characteristics of HTML and XML, languag
Physics
Multiverse theory is one of the most prominent and controversial concepts in modern physics, proposing the possibility that countless other universes exist beyond the universe we i
Chemistry
Environmental problems involving chemicals are recognized as among the serious environmental problems worldwide. Various chemicals released by human activities pollute the air, wat
Library & information science
We live in an age of 'information overload,' with an enormous amount of information and books pouring out every day. Everyone has probably experienced feeling overwhelmed about whi
Tourism studies
Tourism carrying capacity is the maximum number of visitors a place can receive without seriously harming its environment, residents, or the visitor experience. This piece covers i
