He acquired an early interest in telegraphy and took lessons informally ... due to the molecular structure of bamboo’s cellulose fibers. Edison’s light bulb with a bamboo-based carbon filament was ...

When Edison patented the light bulb in 1880, its exact value was hard to gauge; widespread electrification was still decades away. Still, Johnson, Edison and others invested $35,000 to form the ...

but that Edison still had other valid patent claims. These early bulbs had little in common with modern bulbs. The inside of the bulb had to have very little oxygen and moisture, or the filament ...

He gave public demonstrations of this scientific breakthrough in late 1878 and early ... world's first light bulb factory at Benwell in Newcastle. In 1883 Swan teamed up with Thomas Edison of ...