Designs drawn by inventor Thomas Edison to improve his first ever electric lamp go up for sale
Annotated designs drawn by inventor Thomas Edison to improve his first ever electric lightbulb have emerged for sale for £90,000. The scientist, who is often credited with perfecting the carbon filament lamp, worked on the sketches while on honeymoon with his second wife Mina Miller in Florida in 1886. He was determined to refine the … Read more