The Figures

Science Ancient

Hypatia

c.360–415 AD · Alexandria, Roman Egypt

Alexandrian mathematician, astronomer, and Neoplatonist philosopher, the most prominent woman thinker of late antiquity. Daughter of the mathematician Theon, she led the Neoplatonic school in Alexandria, lectured publicly on Plato and Aristotle, and wrote commentaries on the mathematics of Diophantus, the conics of Apollonius, and Ptolemy's astronomy. She was reputed to have improved instruments such as the astrolabe and hydrometer. A respected civic figure consulted by officials, she was murdered by a Christian mob amid the political and religious strife of the city — her death long remembered as a symbol of the fall of classical learning.

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Science Medieval

Ibn Sina (Avicenna)

980–1037; born near Bukhara in Transoxiana, lived and worked across Persia and Central Asia

Abu Ali al-Husayn ibn Sina, known in the Latin West as Avicenna, was the foremost physician and philosopher of the Islamic Golden Age. A prodigy who mastered the Qur'an and much of the sciences in youth, he wrote the vast medical encyclopedia al-Qanun fi al-Tibb (The Canon of Medicine) — a standard text in Europe for centuries — and the philosophical summa Kitab al-Shifa (The Book of Healing). His metaphysics of the necessary and contingent, and his account of the soul, shaped both Islamic and later Scholastic thought.

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Science Renaissance

Galileo Galilei

1564–1642; born in Pisa, worked in Padua, Florence, and Rome; Grand Duchy of Tuscany

The Pisan physicist, astronomer, and mathematician often called the father of modern observational science. He improved the telescope and turned it to the heavens, discovering the moons of Jupiter, the phases of Venus, sunspots, and the rugged surface of the Moon. His work on motion and falling bodies laid foundations for mechanics, and his advocacy of Copernican heliocentrism brought him before the Roman Inquisition in 1633, where he was forced to recant and lived his last years under house arrest at Arcetri.

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Science Renaissance

Nicolaus Copernicus

1473–1543; born in Toruń, worked chiefly in Frombork (Frauenburg), Royal Prussia, Kingdom of Poland

The Polish astronomer and Renaissance polymath who placed the Sun, not the Earth, at the center of the cosmos. A canon of the cathedral chapter at Frombork, he pursued astronomy alongside duties in law, medicine, and church administration, and studied at Kraków and in Italy. His life's work, De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres), published in 1543 as he lay dying, set out the heliocentric model that would overturn the astronomy of Ptolemy and reshape humanity's place in the universe.

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Science Enlightenment

Grounded — answers from primary sources

Isaac Newton

The Enlightenment

English mathematician, physicist, and natural philosopher, author of the Philosophiæ Naturalis Principia Mathematica (1687), which set out the laws of motion and universal gravitation. He invented the calculus (independently of Leibniz), demonstrated that white light is composed of a spectrum of colors, built the first practical reflecting telescope, and later served as Master of the Royal Mint and President of the Royal Society. He also devoted vast labor to alchemy and biblical chronology.

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Science 1800s

Grounded — answers from primary sources

Charles Darwin

Victorian Britain

English naturalist whose theory of evolution by natural selection, published in On the Origin of Species (1859), transformed the biological sciences and humanity's understanding of its own place in nature. His five-year voyage aboard HMS Beagle furnished the observations that would occupy him for the rest of his life.

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Science 1800s

Florence Nightingale

Victorian Britain

English social reformer, statistician, and founder of modern nursing. Her care of wounded soldiers during the Crimean War made her a legend as 'the Lady with the Lamp,' but her lasting revolution came through sanitation, hospital reform, and the pioneering use of statistics and visual data to save lives.

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Science Modern

Grounded — answers from primary sources

Albert Einstein

20th Century

German-born theoretical physicist who reshaped our understanding of space, time, gravity, and light. His 1905 papers on special relativity, the photoelectric effect, and Brownian motion, and his 1915 general theory of relativity, made him the defining scientific mind of the modern age.

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Science Modern

Marie Curie

20th Century

Polish-born French physicist and chemist, pioneer of radioactivity. She discovered the elements polonium and radium, coined the term 'radioactivity,' and became the first person to win Nobel Prizes in two sciences — Physics (1903) and Chemistry (1911).

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