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Traffic light vs Stethoscope
Which invention? Pick one and see how the world splits.
- Traffic light 1868 50% · #233 in the world
- Stethoscope 1816 50% · #235 in the world
What the votes say
The world is split down the middle between Traffic light and Stethoscope: 50% each. Traffic light is #233 of the 300 inventions in the world ranking and Stethoscope #235; among the 62 from the 19th century, they are #47 and #49.
Side by side
| Traffic light | Stethoscope | |
|---|---|---|
| World rank | #233 | #235 |
| Year | 1868 | 1816 |