Mowgli syndrome. Wolfgang Amadeus Mozart, German-Austrian composer – Mozartkugel, Mozart effect, Mozart Medal, the word 'Mozart' became synonymous for '(musical) child prodigy' and 'virtuoso' Erasto B. Mpemba, Tanzanian physicist – Mpemba effect Antonín Mrkos, Czech astronomer – The comets 18D/Perrine-Mrkos, 45P/Honda-Mrkos-Pajdusakova, 124P/Mrkos and 143P/Kowal-Mrkos. Muhammad, Saudi-Arabian religious leader – Muhammadanism Fritz Müller, German biologist – Müllerian mimicry Walther Müller, German physicist – Geiger–Müller tube Franz Carl Müller-Lyer, German psychologist and sociologist — Müller-Lyer illusion. David Mulligan, American hotel manager – Mulligan. Baron Munchausen, German baron – Munchausen syndrome, Munchausen syndrome by proxy Ian Murdock, American software engineer, and Debra Murdock, his wife. – Debian project for free software, made after combining Ian's and his wife's name Debra. Edward A. Murphy, Jr., American engineer – Murphy's law. William Lawrence Murphy, American inventor – Murphy bed. The Muses, Greek mythological characters – a muse, musaeum, museum. Mytyl and Tytltyl, Belgian theatrical characters – Mytyl school and Tyltyl school. N Ashot Nadanian, Armenian chess player – Nadanian Variation Oskar Naegeli, Swiss chess player – Naegeli–Franceschetti–Jadassohn syndrome Miguel Najdorf, Polish-Argentine chess player – Sicilian Defence, Najdorf Variation Fridtjof Nansen, Norwegian explorer – Nansen passport John Napier, Scottish mathematician – neper, unit of relative power level, Napier's bones, method for performing multiplication. Napoleon I, Corsican-French general and emperor – Napoleonic code, Napoleonic Wars, Napoleon complex, Napoleon Opening, Napoleon cake. Narcissus, Greek mythological character – narcissism. John Forbes Nash, British mathematician – Nash equilibrium, Nash embedding theorem. Francis Nash, American general – Nashville, Tennessee and all other cities named Nashville in the United States. Joachim Neander, German poet – Neanderthal (valley) was named after him, and thus the Neandertal fossil found there. Nebuchadnezzar, Babylonian king – nebuchadnezzar, 15-litre wine bottle. Francis Negus, British military officer – negus. Jawaharlal Nehru, Indian politician – Nehru jacket, Nehru Planetarium. Horatio Nelson, British admiral – Nelson (New Zealand), Nelson hold. Nemesis, Greek-Roman mythological character – a nemesis (arch enemy). Neptunus, Roman mythological character – neptunium. Walther Nernst, German chemist – Nernst effect, Nernst lamp. Nero, Roman emperor – Nero Decree, Nero Burning ROM. Henri Nestlé, German-Swiss businessman – Nestlé. Nestorius, Patriarch of Constantinople – nestorianism John von Neumann, Hungarian-American mathematician and computer programmer – Von Neumann machine, Von Neumann probe, Von Neumann architecture, John von Neumann Theory Prize, IEEE John von Neumann Medal Rolf Nevanlinna, Finnish mathematician – Nevanlinna theory. Isaac Newton, British mathematician and physicist – newton – unit