Chemistry
The Hill Every Reaction Must Climb: Activation Energy
Why don’t books on a shelf catch fire by themselves? Reactions must first climb an energy hill called activation energy. This piece covers the Arrhenius equation, why heat speeds r
Articles to explore
You are browsing the English interface. Articles without a published translation are clearly marked and open in Korean.
45 articles found · Search results for “molecules”
Clear search
Food & nutrition
Why Leftover Rice Hardens: Starch Retrogradation
Fresh rice turns hard in the fridge, and bread grows crumbly over days—because of starch retrogradation. This article explains gelatinization and retrogradation, the conditions tha
Physics
The Secret of Walking on Water: Surface Tension
Why can a full glass of water bulge above the rim without spilling, and how do water striders walk on ponds? This article explains how surface tension arises, why water's is unusua
Chemistry
Water Moving Across a Single Membrane: Osmosis
Why does salted cabbage release its water overnight? This article covers what osmosis is, the three factors that drive it, everyday examples, and reverse osmosis, the technology th
Chemistry
Water That Doesn't Freeze When It Should: Supercooling
Why does water sometimes stay liquid below freezing? This article explains what supercooling is and how it works, everyday examples such as clouds, freezing rain, and hand warmers,
Physics
When a Small Force Becomes a Big Sway: Resonance
Why does a swing go higher and higher when you push it in rhythm? This article explains what resonance and natural frequency mean, how the swaying grows, its uses in musical instru
Physics
The Endless Jiggle: Brownian Motion
Why do tiny particles in water never stop jiggling? This article explains Brownian motion, first observed by Robert Brown, the principle Einstein uncovered behind it, Perrin's expe
Chemistry
Mirror-Image Twin Molecules: Chirality
Chirality is the property of an object or molecule that cannot be superimposed on its own mirror image. This article covers the basic definition of chirality, how mirror-image mole
Physics
Light That Knocks Out Electrons: The Photoelectric Effect
The photoelectric effect is the phenomenon in which electrons at the surface of a material such as a metal or semiconductor absorb energy from incident light and escape. This artic
Chemistry
The Force That Restores Balance: Le Chatelier's Principle
Le Chatelier's principle states that when a system at chemical equilibrium is disturbed by a change in concentration, pressure, or temperature, the equilibrium shifts in the direct
Food & nutrition
A Ticking Time Bomb the Body Cannot Clear: The Dangers of Glycotoxins (AGEs) and How to Combat Them
Today's dining tables are more varied and delicious than ever. Crispy fried chicken, golden-brown grilled pork belly, and bread that is crisp outside and moist inside. But behind t
Physics
The Secret That Determines the Weight of the Universe: The Higgs Boson (Higgs Boson)
The universe we live in is filled with countless forms of matter. The desk in front of us, the air we breathe, and even we ourselves all have mass. But one of the most fundamental