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728 articles found
Business administration
The value chain is a framework that breaks a company's work down into individual activities to see where value is created and where costs leak. This piece covers the basic concept,
Chemistry
Corrosion is the process by which a metal reacts chemically with its surroundings, loses its original properties, and breaks down. This piece covers how iron rusts, what happens wh
Statistics
Anscombe’s Quartet is a set of four datasets whose summary statistics are nearly identical but whose graphs look completely different. This piece covers how it came about, the trap
Earth science
A geomagnetic reversal is when Earth’s magnetic north and south poles swap places. This piece covers how Earth’s magnetic field is made, how scientists found traces of past reversa
Information technology
Wirth’s Law is the rule of thumb that software gets slower faster than hardware gets faster. This piece covers where it came from, why software keeps getting heavier, examples arou
General knowledge
Hanlon’s Razor is a rule of thumb that says not to blame malice for what mistakes or foolishness can adequately explain. This piece covers where it came from, why we tend to read o
Film & media
Chroma key is a video compositing technique that makes one color on screen transparent and layers another background in its place. This piece covers how it works, its history from
Journalism & communication
The inverted pyramid is a way of writing news that puts the conclusion and key facts first and places less important information further back. This piece covers how it is structure
Psychology
The halo effect is a bias in judgment in which the impression from one standout trait spills over into how we rate other, unrelated traits. This piece covers the research that firs
Food & nutrition
The Atwater general factor system estimates a food’s energy by multiplying each nutrient by a fixed value, such as 4kcal per gram for carbohydrate and protein and 9kcal per gram fo
Social welfare
The principle of less eligibility holds that people receiving public relief must live at a lower standard than the poorest workers who support themselves. This piece covers why the
Physics
Conservation of angular momentum means that when no outside force acts to change its rotation, the amount of rotation a spinning object has stays the same. This piece covers the co
