Thomas Alva Edison sitting beside his invention, the phonograph mb-width 2197 through which an electrical current

through which an electrical current was passed but without light or discharge in the vacuum gauge

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View of Master's House at Inner and Middle Temple

Looking west through the doorway into the House of Lords

Thomas Alva Edison sitting beside his invention, the phonograph mb-width 2197 through which an electrical currentThomas Alva Edison sitting beside his invention, the phonograph, 1878. Dubbed The Wizard of Menlo Park by a newspaper reporter, Edison (1847 1931) was one of the first inventors to apply the principles of mass production to the process of invention, and therefore is often credited with the creation of the first industrial research laboratory. Edison is considered one of the most prolific inventors in history, holding 1093 US patents in his name, as