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Part of MIT's innovative OpenCourseWare Project that provides materials from MIT classes to the public on the web, this site outlines a class on the physical processes by which materials, such as pollutants, are transported in the environment. The course focuses primarily on transport through water....

This lecture series, from the Howard Hughes Medical Institute Biointeractive project, features the following lectures: "Understanding Embryonic Stem Cells," "Adult Stem Cells and Regeneration," "Coaxing Embryonic Stem Cells," and "Stem Cells and the End of Aging." Each lecture, available in Flash...

These diagrams are provided by the University of Minnesota and show the the steady-state characteristics of a synchronous motor.  These "phasor diagrams are shown as function of the load P with the excitation voltage E kept constant."