Isaac Newton

1643 – 1727 · United Kingdom · Physics, Mathematics, Astronomy

Showed that one law governs the apple and the Moon alike.

Summary^1,3

Sent home from Cambridge by plague in 1665, Newton invented calculus, split white light into its spectrum and conceived universal gravitation in about eighteen months. The Principia of 1687 gave the world its first complete mathematical physics: three laws of motion plus an inverse-square gravity that predicted the solar system.

Achievements^1,4

Published Philosophiæ Naturalis Principia Mathematica (1687) with the three laws of motion and universal gravitation
Invented calculus independently of Leibniz
Proved white light is composite and built the first practical reflecting telescope
As Master of the Royal Mint, recoined England's currency and prosecuted counterfeiters

Principal works^1,3

Principia MathematicaOpticksMethod of FluxionsArithmetica Universalis

How the work shapes the world today^2,4

Every bridge, aircraft, engine and satellite is designed with Newtonian mechanics; spacecraft navigation to Mars uses his equations, not Einstein's, except for tiny corrections. Calculus is the mathematical language of economics, epidemiology, climate modelling and machine learning. The 'laws of nature' framing — universal, mathematical, discoverable — became the model for all subsequent science and much of Enlightenment political theory.

Posterity and the family line^2,4

Newton never married and left no children; he died intestate and his estate was divided among eight half-nieces and half-nephews.

2 people · 2 generations · 2 links with primary documentation

No direct line
Never married
Newton died unmarried and intestate in 1727. His estate passed to eight half-nephews and half-nieces of the Smith and Barton families; his papers went to Catherine Barton and her husband John Conduitt.
Documented

via No direct line
Catherine Conduitt (née Barton)
1679 – 1739
Half-niece
Kept house for Newton in London and inherited the manuscripts. Through her daughter the papers passed to the Portsmouth family, which is why the alchemical writings survived to be sold at Sotheby's in 1936.
Documented

Every link carries its own evidence. Documented means a register, will, archive or prize record names the relationship; attested rests on scholarly reference; contested is disputed between sources; and where the record runs out it is marked rather than filled in.

Continuity of ideas

Who shaped Isaac Newton, and who they shaped

Inherited from4

Christiaan Huygens
1629 – 1695 · Physics, Astronomy
Huygens's wave optics and pendulum mechanics are Newton's standing rivals and tools.
Galileo Galilei
1564 – 1642 · Astronomy, Physics
Inertia and uniform acceleration enter the Principia as Newton's first law and free fall.
Ibn al-Haytham
965 – 1040 · Physics, Mathematics
The experimental method of testing light with controlled apparatus reaches the Opticks.
Johannes Kepler
1571 – 1630 · Astronomy, Mathematics
The three planetary laws are what universal gravitation was built to explain.

Passed the work to5

Albert Einstein
1879 – 1955 · Physics
General relativity keeps Newtonian gravity as its weak-field limit and replaces its absolute space.
Carl Friedrich Gauss
1777 – 1855 · Mathematics, Astronomy
Celestial mechanics after Newton is the problem that produced Gauss's least squares.
Émilie du Châtelet
1706 – 1749 · Physics, Mathematics
Her annotated Principes mathématiques remains the French Principia.
Leonhard Euler
1707 – 1783 · Mathematics
Euler recast Newtonian mechanics in the analytic language physics still uses.
Ruđer Bošković
1711 – 1787 · Physics, Astronomy
Bošković's Theoria is written as a unification of Newtonian attraction and repulsion.

Sources and references

Numbered markers in the text above point to the entries below. Each links to a primary document, archival collection or scholarly reference where the claim about Isaac Newton can be checked.