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by Isaac Asimov · · tapa blanda · 272 pages
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'X' Stands for Unknown es una colección de ensayos cortos de Isaac Asimov que abarcan diversos temas de física, química, astronomía y matemáticas. Los ensayos exploran desde las leyes del electromagnetismo hasta los fenómenos astronómicos, pasando por los chips de ordenador. Publicado en 1986, este libro ofrece una visión accesible y entretenida de la ciencia para lectores de todas las edades.
Isaac Asimov was an American writer and professor of biochemistry at Boston University. During his lifetime, Asimov was considered one of the "Big Three" science fiction writers, along with Robert A. Heinlein and Arthur C. Clarke. He wrote or edited more than 500 books and an estimated 90,000 letters and postcards. Best known for his hard science fiction, Asimov also wrote mysteries and fantasy, as well as popular science and other non-fiction. His work spans nine out of the ten categories of the Dewey decimal system.
