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This online lecture covers elementary discrete mathematics for computer science and engineering.

Topics covered in this online lecture (part 2) include the general formalism of quantum mechanics, harmonic oscillator, quantum mechanics in three-dimensions, angular momentum,...

This course teaches how to program in PHP, which is one of the most popular languages of modern web development.

Khan Academy provides various free introductory mathematics video lessons. Topics include elementary math, algebra, geometry, calculus, trigonometry, differential equations,...

This online lecture explores photography as a disciplined way of seeing or investigating urban landscapes, and expressing ideas. Readings, observations, and photographs form the...

This online lecture explores the basics of digital circuits.

This online lecture series explores the science of the Covid-19 pandemic.

This online lecture introduces the core theory of modern financial economics and financial management, with a focus on capital markets and investments.

This online lecture gives an introduction to quantum optics.

In this online course, professional skateboarder Tony Hawk teaches skateboarding skills and techniques.

This series of online lectures discusses the fundamental concepts of communication networks, with a focus on computer networking. Participants will learn to identify relevant...

This online lecture covers the experimental basis of quantum physics. It introduces wave mechanics, Schrödinger's equation in a single dimension, and Schrödinger's equation in...

In this online course, world racing champion Lewis Hamilton teaches how to prepare the mind, body, and spirit for victory. The course includes more than 10 video lessons and...

Free Greek language app with many short tests to learn "on the go". (Not a video course.)