| Rank | Name | IQ | Born | Known For |
|---|---|---|---|---|
| 1 1st | Ludwig Boltzmann 🇦🇹 | 195 | 1844 | The development of statistical mechanics |
| 2 2nd | Friedrich Nietzsche 🇩🇪 | 190 | 1844 | Thus Spoke Zarathustra, Beyond Good & Evil |
| 3 3rd | Vilfredo Pareto 🇮🇹 | 190 | 1848 | The Pareto Principle |
| 4 | Thomas Edison 🇺🇸 | 185 | 1847 | The phonograph, the motion picture camera, and early versions of the electric light bulb |
| 5 | John William Strutt, 3rd Baron Rayleigh 🇬🇧 | 180 | 1842 | Discovery of argon |
| 6 | Francis Ysidro Edgeworth 🇬🇧 | 180 | 1845 | Being the founding editor of The Economic Journal. |
| 7 | Alexander Graham Bell | 180 | 1847 | Invention of the telephone. |
| 8 | Ivan Pavlov 🇷🇺 | 180 | 1849 | Being the founder of modern behavior therapy |
| 9 | William Kingdon Clifford 🇬🇧 | 175 | 1845 | Clifford algebra |
| 10 | William James 🇺🇸 | 170 | 1842 | Will to believe doctrine |
| 11 | Gottlob Frege 🇩🇪 | 165 | 1848 | Begriffsschrift (1879) <br> The Foundations of Arithmetic (1884) <br> Basic Laws of Arithmetic (1893… |
| 12 | Pyotr Ilyich Tchaikovsky 🇷🇺 | 160 | 1840 | |
| 13 | Robert Koch 🇩🇪 | 155 | 1843 | Bacterial culture method <br> Koch's postulates <br> Germ theory <br> Discovery of anthrax bacillus… |
| 14 | Auguste Rodin 🇫🇷 | — | 1840 | The statue of The Thinker |
| 15 | Claude Monet 🇫🇷 | — | 1840 | Painter |
The Year of Revolutions — 1848 — loomed at the end of this decade, as industrialization accelerated and social tensions exploded across Europe. Marx and Engels were writing the Communist Manifesto, while photography was capturing reality for the first time. Railways were transforming distance and time, and the modern industrial city with all its contradictions was fully taking shape.
Ludwig Boltzmann is ranked #1 among geniuses born in the 1840s with an estimated IQ of 195, known for The development of statistical mechanics.
Our database includes 16 notable geniuses born between 1840–1849, spanning fields from science and mathematics to philosophy, literature, and the arts.
The average estimated IQ of documented geniuses born in the 1840s is 177, with the highest recorded being 195.
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