measurements
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In this introductory lecture, Professor Lewin discuses basic units, dimensions, measurements and associated uncertainties, dimensional analysis, and scaling arguments. Further, he explains why a measurement is meaningless without knowledge of its uncertainty, using data collected by Galileo Galilei as an example. He begins to dive into dimensional analysis, reasoning that the time from an object to fall from a certain height is independen...more
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This lecture deals exclusively with frictional forces. Starting with a block at rest on a horizontal surface, Professor Lewin describes the normal force, the maximum frictional force that must be overcome to budge the block, and the coefficient of static friction. He continues to make measurements of the coefficient of static friction, and presents ways to reduce friction using hydroplanes and air tracks. Even a flea can move a very heavy...more
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The course covers the system and design issues relevant to high-speed electrical (and optical, if time permits) signaling. We start with the basics of channel properties, modeling, measurements, and communications techniques. Circuit design of main components is covered in detail. The system design issues such as planning and budgeting are presented. A large portion of the class is devoted to case studies that include the multi...more
