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810 articles found
Psychology
The mere exposure effect is our tendency to like things more simply because we encounter them repeatedly. From Zajonc’s 1968 experiments and perceptual fluency to ads, music, and r
Food & nutrition
The glycemic index is a value that shows how quickly and how much blood sugar rises after eating a particular food, relative to glucose (or white bread) set at 100. This article co
Economics
The basic concepts of supply and demand, how market equilibrium and the equilibrium price form, how price changes affect quantity demanded and supplied, what shifts the demand and
Robotics
The end effector is the device at the tip of a robot arm that actually does the work. This article covers where it attaches, the types of grippers, process tools and sensors, how t
Food & nutrition
Vitamins are essential nutrients for maintaining our health and normal bodily functions. They come in various forms, have different functions, and play important roles in many phys
Physics
The Foucault Pendulum is a device that shows the Earth's rotation with your own eyes: a heavy bob on a very long wire whose plane of swing slowly turns relative to the ground. We l
Information technology
Advances in AI technology are bringing new changes to our lives. We can now interact with artificial intelligence (AI) that thinks and learns like humans. Among these technologies,
Earth science
El Niño and La Niña are climate phenomena that arise from complex interactions between the atmosphere and the ocean, significantly influencing climate and weather patterns worldwid
Tourism studies
Last chance tourism is travel to see vanishing landscapes, wildlife, or cultures before they are gone. This piece covers the concept and its origins, why people are drawn to it, we
Journalism & communication
News values are the criteria that decide which events become news and how they are reported. This article covers Galtung and Ruge’s 1965 study that started the field, the main news
Library & information science
The h-index folds the number of papers and the number of citations into a single figure. This article covers how to calculate it, what it measures and its strengths, its limits acr
Robotics
How does a robot with no map work out both its surroundings and its own position? This piece explains SLAM: the chicken-and-egg problem behind it, its roots in the 1986 IEEE roboti
