Thomas Edison used this carbon-filament bulb in the first public demonstration of his most famous
Edison After Forty: The Challenge of Success
Grade Range: 5-12
Resource Type(s): Reference Materials
Date Posted: 10/11/2009
Students will learn about Thomas Edison's life in the years after he had become one of the most famous men in the world. At the age of 40, with major inventions behind him, Edison faced a new technical world, which he had helped to create, and the challenge of competing with his own success. This website takes the form of a photo exhibition and chronicles the latter half of Edison's life and career.