Michio Kaku, a cofounder of string theory, has new book out (Physics of the Impossible) explaining why we won’t see invisibility, force fields, and lightsabers just yet. Though are children just might. This review at the NY Times explains how these three are possible, but not yet viable. (The comments are quite inventive. I do so love talking to engineers and physicists about technology, their glee is just so palpable.)
(Via Worldmagblog)
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