With every step we take, our brains are already thinking about the next one. If a bump in the terrain or a minor misstep has ...

Most of us first hear about the irrational number π (pi)—rounded off as 3.14, with an infinite number of decimal digits—in ...

Assessments are key tools used to evaluate a student's preparation ahead of exams. They provide clear feedback on the effectiveness of study methods, what students have actually understood, and also ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...

A laser is usually constructed from two basic elements: a material that provides optical gain through stimulated emission and an optical cavity that partially traps the light. When the total gain in ...

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