33
/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
9189162
464674
2

nov 24, 1879 - Invention of light bulb

Description:

Joseph Swan and Thomas Edison both patent a functional incandescent light bulb. Some two dozen inventors had experimented with electric incandescent lighting over the first three-quarters of the 19th century but never came up with a practical design. Swan's, which he had been working on since the 1860s, had a low resistance so was only suited for small installations. Edison designed a high-resistance bulb as part of a large-scale commercial electric lighting utility

Added to timeline:

Byr.t
28 May 2024
0
0
1504

Date:

nov 24, 1879
Now
~ 145 years ago