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809 articles found
Logistics
Why does steady consumer demand turn into wild swings in orders further up the supply chain? This article explains how the bullwhip effect works, its four main causes, the Beer Gam
Information technology
The Two Generals’ Problem is a thought experiment showing that, over a channel where messages can be lost, two parties can never be completely certain they have agreed to act toget
Chemistry
Inorganic chemistry is a branch of chemistry that, unlike organic chemistry, which centers on carbon, studies most elements other than carbon and their compounds. As a fundamental
Design
The Gestalt principles describe how the eye groups scattered visual elements by cues such as proximity, similarity and continuity and reads them as a whole. This piece covers their
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
Earth science
A tsunami is a series of giant, very long waves created when a huge volume of seawater is displaced at once by an undersea earthquake, landslide, or volcanic eruption. This piece c
Food & nutrition
Pasteurization heats food below boiling to cut pathogens and spoilage microbes while keeping flavor and nutrition. This piece covers Pasteur’s wine experiments in 1864, Soxhlet’s m
Chemistry
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
Library & information science
Berrypicking, named by Marcia J. Bates in 1989, is a model of search in which queries and interests evolve and useful information is gathered bit by bit—unlike classical retrieval
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
Physics
Why does an ambulance siren suddenly drop to a lower, drawn-out pitch the moment it passes you? This guide explains the Doppler effect, from its basic concept and working principle
Journalism & communication
Inoculation theory holds that people who meet weak counterarguments in advance and practice refuting them resist stronger persuasion later. This piece covers William J. McGuire’s 1
