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796 articles found
Film & media
Resolution is a key factor that determines the clarity and detail of video. This article covers the concept of resolution, types such as SD, HD, FHD, and UHD, the difference betwee
Physics
Why does a free kick bend and a curveball drop? This article covers Newton's tennis ball, Magnus's cylinder experiment, the pressure difference created by spin, its uses in sports
Robotics
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
Robotics
What determines how a robot can move? This article explains degrees of freedom, covering what the term means, how six-axis industrial robot arms work, the degrees of freedom of 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
Earth science
Clouds are a familiar sight, yet few people understand how they form, what kinds there are, and what each one tells us. This article explains the principles of cloud formation, the
Physics
Plasma is the 4th state of matter, following solids, liquids, and gases, and is a unique state with electrical and high-temperature characteristics. These characteristics give plas
Statistics
Reliability and validity always come up when studying surveys in statistics, marketing, or opinion polling. This guide uses two illustrated examples, shooting and makeup, to make t
Education
Education is not simply about conveying knowledge; it is a complex process of bringing out students' full potential. Educational psychology plays an important role in this process.
Chemistry
Why don’t books on a shelf catch fire by themselves? Reactions must first climb an energy hill called activation energy. This piece covers the Arrhenius equation, why heat speeds r
Education
Learning theories are an important element that forms the foundation of education as a field of study, aiming to explain human learning processes and thereby propose effective teac
Earth science
Lightning is one of the most remarkable electrical phenomena produced by nature. The moment lightning flashes is not only visually beautiful but also conceals complex scientific pr
