Physics
The Real Reason the Sky Is Blue: Rayleigh Scattering
Rayleigh scattering, worked out by Lord Rayleigh in 1871, is the scattering of light by particles much smaller than its wavelength, such as air molecules, and it is far stronger fo
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810 articles found
Information technology
Start Small to Run Big: Gall's Law
Gall's Law says that a complex system that works has always evolved from a simple system that worked. We look at where it came from, what its three sentences mean, real examples, a
Psychology
The Principles of Forgetting - Why Can't We Remember?
This time, I would like to put together material on the concept and theories of forgetting as a topic in psychology. Everyone can often find themselves forgetting something or stru
Business administration
Value That Grows the More It’s Used: The Network Effect
A network effect is the phenomenon in which a product or service becomes more valuable as more people use it. This piece covers direct and indirect effects, two-sided platforms and
Film & media
Video Shooting Techniques and How to Edit Using Shots
Why do films and dramas cut from distant shots to close ones? This article explains the main shot types used in video production, namely the long shot, full shot, medium shot, bust
Statistics
An Easy Guide to Non-Probability Sampling: Concept and Types
An easy introduction to non-probability sampling in statistics, which selects samples based on the researcher's judgment or convenience, covering convenience, judgment (purposive),
Design
Grid Components and Types for Stability in Design
This time, I would like to create a resource on grids, a concept considered important in design alongside layout. We will explore what a grid is, how it is structured, and what typ
Robotics
The Machine That Crawled After Light: Grey Walter’s Tortoises
Grey Walter’s Tortoises were small robots built in the late 1940s by British neurophysiologist William Grey Walter that explored their surroundings on their own using just two vacu
Journalism & communication
Words from the Parliamentary Press Gallery: The Fourth Estate
Why is the press called the “fourth estate”? This article traces the phrase from the three estates and the press gallery of the British Parliament to Macaulay, Carlyle, and the Bur
Information technology
Adding More Makes It Later: Brooks's Law
Why does adding people to a late software project often make it even later? This article covers the origin of Brooks's Law and the illusion hidden in the man-month, why adding peop
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
Logistics
An Inland Port: Understanding ICD (Inland Container Depot)
How do the everyday items we use and the countless products imported from overseas reach our hands? Most arrive aboard enormous container ships at major ports such as Busan Port or