Timelines
- 10 moments · 1 branch · 8 images · 0 videos · 0 stories · 0 recordingsby AdminWorld historyTechnologyPublic
A factual account of the barcode's origins, beginning with Norman Woodland and Bernard Silver's 1952 patent for a bullseye-shaped concentric circle code and tracing the technical struggles and slow commercial adoption that followed. Over more than two decades, the idea evolved into the linear black-and-white striped symbol scanned at checkout counters worldwide, as laser and computing technology finally caught up with the original concept. The tone is one of patient ingenuity and gradual technological triumph, highlighting how an ahead-of-its-time invention reshaped retail and logistics.
- 17 moments · 0 branches · 17 images · 0 videos · 0 stories · 0 recordingsby jhfWorld historyTechnologyPublic
From the first water flush in ancient Crete to the modern sewage systems that eradicated epidemics in nineteenth-century cities. A timeline about an invention that is rarely celebrated but saved more lives than most medical breakthroughs.
Where is there history already?
Per continent and subject, counted across every moment you are allowed to see. Open a row for the individual regions, with the same spread across subjects. An empty cell is not a mistake — it is a timeline that does not exist yet.
| Region | Total | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 63 | 58 | 27 | 26 | 40 | 60 | 81 | 23 | 7 | 385 | |
| 4 | 1 | 8 | 3 | 1 | 8 | 1 | · | 3 | 29 | |
| 22 | 12 | 27 | 10 | 14 | 12 | 10 | 4 | 2 | 113 | |
| 11 | 1 | 5 | 7 | 6 | 9 | 11 | 10 | 1 | 61 | |
| 70 | 45 | 18 | 32 | 12 | 28 | 37 | 8 | 15 | 265 | |
| 37 | 19 | 4 | 26 | 17 | 62 | 46 | 10 | 9 | 230 | |
| 1 | 7 | 2 | 4 | 1 | 2 | 8 | · | 3 | 28 | |
| 14 | 4 | 8 | 7 | 56 | 61 | 14 | 8 | 53 | 225 |
See a gap you could fill? Start a timeline there.