MIT Professor Walter Lewin, Physics, Classical Mechanics, Lecture No. 06: Newton's Laws
This lecture is all about Newton's First (inertia), Second (F=ma) and Third (action=-reaction) Laws.
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MIT Professor Walter Lewin, Physics, Classical Mechanics, Lecture No. 07: Weight and Weightlessness
This lecture explores weight, perceived gravity, weightlessness, free fall, zero perceived gravity in orbit.
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Ferrofluid is a very interesting material originally developed by NASA it has now found itself been used for a whole range of devices including dampers for controlling and stabilizing large building that move around in the wind. It is amazing...