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775 articles found
Film & media
An anamorphic lens squeezes a wide scene only horizontally onto film or a sensor, then stretches it back by the same ratio to create a widescreen image. This article covers how it
Chemistry
Chemical catalysts are essential substances for accelerating chemical reactions or optimizing reaction conditions. Catalysts can maximize reaction efficiency without being consumed
General knowledge
Why does trying to hide information make it spread even further? This article covers the 2003 lawsuit that gave the Streisand effect its name, four reasons suppression backfires, w
Journalism & communication
People today live in an age of information overload, with information pouring indiscriminately through the media. This has brought the importance of media literacy to the forefront
Logistics
Returns, recalls, reusable crates, and recycling all flow in the opposite direction from ordinary shipping. This piece explains what reverse logistics covers, the collection–inspec
Education
Scaffolding is a teaching strategy that gives learners temporary support for tasks they cannot yet do alone and gradually removes it as their abilities grow. This article covers it
Social welfare
Welfare administration is a system that plays an important role in improving citizens' quality of life and strengthening the social safety net. It serves as an essential foundation
Physics
A sonic boom is the loud sound made when the shock waves created by an object moving faster than sound reach the ground. This article explains how sonic booms form, the small sonic
Economics
The winner’s curse is when the person who most overestimates an item’s uncertain value wins the auction and overpays. This piece covers its origin in Capen, Clapp and Campbell’s 19
Chemistry
An in-depth look at chromatography, an essential tool in chemical analysis: its basic principles and history, major techniques such as HPLC, GC, IC, SEC, and paper and thin-layer c
Library & information science
This time, we will explore the concepts of the Semantic Web, which is attracting attention as a next-generation web technology, and the related concept of ontology, as well as thei
Earth science
Floods are natural disasters that threaten countless lives and properties around the world every year. Climate change and rapid urbanization are increasing the frequency and intens
