Edison lights the night
Edison's Menlo Park lab delivered a practical incandescent lamp, then the Pearl Street station (1882) to power it — light sold as a service.
Humanity
115 events across three thousand years — chosen to be multi-regional and honest about uncertainty. Follow a thread to trace one capability through time, or filter by region and kind.
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Chronology
Edison lights the night
Edison's Menlo Park lab delivered a practical incandescent lamp, then the Pearl Street station (1882) to power it — light sold as a service.
The transistor, three weeks after Christmas
Bardeen and Brattain demonstrated a point-contact transistor at Bell Labs on December 23, 1947, with Shockley's team driving the solid-state program.