### Mathematical Astronomy in Babylon

March 10, 2016 My science education started with children's science books. One of these was "The World of Science," and another was the "Golden Book of Science."[1] The full title of the latter book was, "The Golden Book of Science for Boys and Girls." The author of that book was a woman, Bertha Morris Parker, and this probably explains such an early excursion into gender equality in the sciences. The premier children's mathematics book of my generation was Irving Adler's, "The Giant Golden Book of Mathematics," Illustrated by Lowell Hess (Golden Press, New York, 1960).[2]**The Golden Book of Science for Boys and Girls by Bertha Morris Parker (1956)**.

This profusely illustrated book was an inspiration for many young scientists.

It's interesting how far science has advanced in the sixty years since publication of this book.

(Scan of the cover of my copy.)[1])

One frequent topic in children's books at that time was the Seven Wonders of the Ancient World, as listed below.

Ancient Wonder | Date | |

Great Pyramid of Giza | 2584–2561 BC | |

Hanging Gardens of Babylon | c. 600 BC | |

Temple of Artemis at Ephesus | c. 550 BC | |

Statue of Zeus at Olympia | 466–456 BC | |

Mausoleum at Halicarnassus | 351 BC | |

Colossus of Rhodes | 292–280 BC | |

Lighthouse of Alexandria | c. 280 BC |

*The Hanging Gardens of Babylon, as painted in 1886 by Ferdinand Knab (1834-1902) as part of his "Seven Wonders of the Ancient World" series.(Via Wikimedia Commons.)*

Although we question Babylonian excellence in gardening, there's no question that Babylonian mathematics was advanced for its time. One quirk of Babylonian mathematics was its number system, which was sexagesimal; that is, it was a base-60 system. This number system, probably inherited from the Sumerians, had some logic behind it. Sixty is a highly composite number, having as factors, 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. A Babylonian cook would have an easy time scaling recipes.

*Some representative Babylonian numbers, illustrating how quantities were inscribed by a simple wedge-tipped stylus into clay tablets. fractional numbers, as given in modern notation, have the form a; b, c, d, which has the decimal equivalent a + (b/60) + (c/3600) + (d/60^{3}), etc. (Modified Wikimedia Commons image by Josell7.)*

This sexagesimal number system might be the reason why we have 360 degrees in a circle. The Babylonians used an inscribed hexagon to divide a circle, and each sixth of that circle was further divided by 60, resulting in 360 degrees. Like most other ancient people, the Babylonians were avid astronomers, and they recorded their astronomical observations on clay tablets. As an example, the Venus tablet of Ammisaduqa, which dates to about 1650 BC, records the risings and setting times of Venus over a period of 21 years. There's even an observation of Halley's comet in 164 BC (see figure).

*Perhaps it was practice in deciphering the hen-scratching of students that enabled the deciphering of this tablet.A Babylonian tablet, now at the British Museum in London, recording the appearance of Halley's comet in 164 BC.(Photograph by Linguica, via Wikimedia Commons.)*

In a recent article in Science, Mathieu Ossendrijver of Humboldt University (Berlin, Germany), an astrophysicist who became an astroarchaeologist, writes that Babylonian mathematics, as applied to astronomy, had geometrical operations that anticipate modern calculus.[3-5] He discovered five clay tablets of the period 350-50 BC that explain the motion of the planet, Jupiter, using a trapezoidal construction of velocity data as a function of time.[3,5] Jupiter was a prime object of study in Babylonian astronomy, since Jupiter was identified with their principal deity, Marduk (see figure). While pondering the significance of some clay tablets, Ossendrijver was gifted with photographs of a similar, uncataloged tablet at the British Museum by Assyriologist, Hermann Hunger of the University of Vienna.[4] Ossendrijver was able to connect the trapezoidal calculation of four tablets with Jupiter through this additional tablet.[5]

*The Babylonian god, Marduk, as found on a cylindrical seal.Marduk, who is associated with the planet, Jupiter, is shown on the seal with his pet dragon, sirrush.Zeus, the principal deity of the ancient Greeks, and Jupiter, the principal deity of the Romans, were also identified with the planet Jupiter.(Modified Wikimedia Commons image.)*

As most of us remember, the trapezoidal method of finding the area under a curve was a prelude to integral calculus. In the Babylonian tablets, such a construction was used to interpolate the position of Jupiter through ratios of the areas under the velocity

*vs*time curve. The area under such a curve, velocity multiplied by time, gives distance. In this astronomical case, the velocity is degrees per period, so the distance is specified as degrees (see figure). Such an operation was first seen in Europe in the 14th century.[3]

*Equal area construction for the motion of Jupiter.The areas are given in sexagesimal notation and their decimal equivalent.(Created from data in ref. 3 using Gnumeric and Inkscape.[3]*

### References:

- Bertha Morris Parker, "The Golden Book of Science for Boys and Girls (A Giant Golden Book)," Simon and Schuster, January 1, 1956, 97 pp. (via Amazon).
- Irving Adler, "The Giant Golden Book Of Mathematics: Exploring The World Of Numbers And Space," illustrated by Lowell Hess, Golden Press, January, 1960, (via Amazon).
- Mathieu Ossendrijver, "Ancient Babylonian astronomers calculated Jupiter's position from the area under a time-velocity graph," Science, vol. 351, no. 6272 (January 29, 2016), pp. 482-484, DOI: 10.1126/science.aad8085.
- Ron Cowen, "In Depth - Archaeology - Ancient Babylonians took first steps to calculus," Science, vol. 351, no. 6272 (January 29, 2016), p. 435, DOI: 10.1126/science.351.6272.435.
- Michelle Hampson, "Ancient Babylonians Used Advanced Geometry to Track Jupiter," AAAS News, January 27, 2016.

*Permanent Link to this article*

Linked Keywords: Science; education; child; children; The World of Science; Golden Book of Science; author; woman; gender equality; mathematics; Irving Adler; Western Publishing; Golden Press; New York; illustration; illustrated book; youth; young; scientist; publication; Seven Wonders of the Ancient World; Great Pyramid of Giza; Anno Domini; BC; Hanging Gardens of Babylon; Temple of Artemis at Ephesus; Statue of Zeus at Olympia; Mausoleum at Halicarnassus; Colossus of Rhodes; Lighthouse of Alexandria; King Nebuchadnezzar II; Babylon; Iraq; mythology; mythical; garden; Assyrian; monarch; king; Sennacherib; Nineveh; painting; Ferdinand Knab; gardening; quirk; Babylonian numerals; number system; sexagesimal; radix; base-60 system; Sumer; Sumerian; logic; highly composite number; cooking; cook; ratio; scaling; recipe; wedge-tipped; stylus; fractional; decimal; Wikimedia Commons; degree; circle; hexagon; Babylonian astronomy; astronomer; astronomical observations; clay tablet; Venus tablet of Ammisaduqa; Venus; Halley's comet; decipherment; deciphering; scribble; hen-scratching; student; British Museum; London; Mathieu Ossendrijver; Humboldt University (Berlin, Germany); astrophysics; astrophysicist; archaeoastronomy; astroarchaeologist; astronomy; geometry; geometrical; operation; calculus; the planet, Jupiter; trapezoid; trapezoidal construction; velocity; data; function; time; deity; Marduk; photograph; Assyriologist; Hermann Hunger; University of Vienna; cylinder; cylindrical; emblem; seal; dragon; sirrush; Zeus; ancient Greece; ancient Greeks; Jupiter mythology; Roman Empire; Romans; area; curve; integral calculus; construction; interpolation; interpolate; position; ratio; multiplication; multiply; Europe; 14th century; Gnumeric; Inkscape; Bertha Morris Parker, "The Golden Book of Science for Boys and Girls (A Giant Golden Book)," Simon and Schuster, January 1, 1956, 97 pp.; Irving Adler, "The Giant Golden Book Of Mathematics: Exploring The World Of Numbers And Space," illustrated by Lowell Hess, Golden Press, January, 1960.

### Google Search

Latest Books by Dev Gualtieri

*Mathematics-themed novel for middle-school students*

*Complete texts of LGM, Mother Wode, and The Alchemists of Mars*

Other Books

- X-raying Sealed Letters - April 12, 2021

- Unusual Hall Effect - April 5, 2021

- Slippin' and Slidin' - March 29, 2021

- The Seven Sisters - March 22, 2021

- Counterfeit Protection - March 15, 2021

- Phosphine on Venus - March 8, 2021

- Most Distant Quasar - March 1, 2021

- Steganography - February 22, 2021

- Disjunction - February 15, 2021

- Tungsten - February 8, 2021

- Skin Communication - February 1, 2021

- Demons in Science - January 25, 2021

- Metal Powder Energy - January 18, 2021

- Cosmic Glow - January 11, 2021

- Room Temperature Superconductivity - January 4, 2021

- Christmas 2020 - December 21, 2020

- Factorials - December 14, 2020

- Educated Guessing - December 7, 2020

- Polymaths - November 30, 2020

- LEOS - November 23, 2020

- Noisy Civilization - November 16, 2020

- Phase Rule - November 9, 2020

- Armstrong Numbers - November 2, 2020

- Thermoelectrics - October 26, 2020

- Short Words - October 19, 2020

- Heat Sinks - October 12, 2020

- Raindrop Energy-Harvesting - October 5, 2020

- Heat Transfer - September 28, 2020

- Dull Blades - September 21, 2020

- Science Awards - September 14, 2020

- Cubic Earth - September 7, 2020

### Deep Archive

Deep Archive 2006-2008

**Blog Article Directory on a Single Page**