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  • Apollo: The Alignment Optical Telescope

  • Can We Create Artificial Gravity?

  • How a quartz watch works

  • HOW IT WORKS: Car Transmissions (720p)

  • International Space Station Orbit Tracker

  • Lecture 1 | The Fourier Transforms and its Applications

  • Mechanical Principles (1930) by Ralph Steiner [4min selection]

  • Newton's Prism Experiment

  • Shrinking microscope lenses

  • The Engineering of a Disposable Diaper