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The Prehistoric Era

469 BC - 1300 AD

This era is regarded as the era that mechanical means of calculation were introduced though with very limited possibilities.

In China a complete mechanical orchestra was built!

The early western philosophers adapted the idea that mind and body were two separate things.

The foundations of mathematics traveled slowly from the far east towards the west

pre history | antiquity | pre industrial era | industrial era
0000 - 469 - 1310

 

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469 BC

socrates.jpg (4411 bytes)

Socrates, mentat of Plato, was the first western thinker who said that mental activities were taking place in ones sub consciousness.

Socrates, Plato and Aristotle were the most important philosophers that determined the, foremost rationalistic, philosophy of the West.

Aristotle established the bases of mathematical logic. He introduced the concept of variable in the logic, using letters for the designation of concepts. After Aristotle's work, that was considered to be the perfection, science will, or seemed to, stagnate for almost two millenia. Being a scientist during this period meant knowing your classics, e.g. Plato, Aristotle and their contemporaries

 

450 BC


sumeran counting board

Stones, pebbles, were introduced by the Greek as counting aids in the form of a counting board in Europe.

The Greek probably adapted the idea from the Sumerians since it looks very similar in method and form. From Greece this Abax or Abaq as it will be called spreaded through Europe. In Western Europe these counting boards staid in use for a pretty long time, but gradually people started to use the Indo-Arabic notation of numbers: "0123456789". (+/- 1200 AD)

427 BC

plato.jpg (7056 bytes)

In the Pheado and later works Plato described various ideas relating to the human thinking.

He linked these ideas to machines. Imagine over a thousand of years before the invention of the computer!

415 BC

Theaetetus, member of Plato's academy, designed geometry.

 

409 BC

Diophante introduced the equal sign and was the first to use a form of symbolic language of algebra.

 

300 BC


page from Elements, first issue in print Venice: Erhard Ratdolt, 1482 (20)

Euclid (325-270BC) wrote the Elements, the world's most definitive text on geometry.

The book synthesized earlier knowledge about geometry, and was used for centuries in Western Europe as the geometry textbook.(19) Besides the Elements, there are the Data, On Divisions of Figures, the Phaenomena, and the Optics. And many more books that still are in use or were used deep into the 20th century(18)

The counting board which later evolved to the abacus is believed to be first in use by the Babylonians in this era.

250-230 BC

The Sieve of Eratosthenes (276BC-194BC) is used to calculate prime numbers. (23)(3).

 

213 BC

Chi-Hwang-ti orders all books in China to be burned and scholars to be put to death. (19)

 

200 BC

In China artisans build a completely mechanical orchestra.

An Egyptian engineer designs a water clock that would be the most precise time mechanism for the next 2000 years!

 

150-100 BC

The first account of the Antikythera.

It is a disc-like instrument one can use to calculate the length of the months - at that time: 29 or 30 days. The mechanism must be set to the proper latitude and day of the week(4) in order to calculate the correct date.(27)

New research reveals the dating 150-100 BC:

The researchers, led by the mathematician and filmmaker Tony Freeth and the astronomer Mike G. Edmunds, both of the University of Cardiff, Wales, are reporting their results today [2006 11 30] in the journal Nature [Nature 444, 587-591].

They said their findings showed that the inscriptions related to lunar-solar motions, and the gears were a representation of the irregularities of the Moon’s orbital course, as theorized by the astronomer Hipparchos. They established the date of the mechanism at 150-100 B.C.(26)

 

1 AD

The Year 1

In the 525 AD Dionysius Exeguüs estimated the year of Jesus of Nazareth's birth, and proposed to use that as 'year 1', replacing the then used Roman era. This Julian Calendar was replaced by the Gregorian Calendar in 1582 AD, to compensate for accumulated leap-year days. Dionysius slightly miscalculated Jesus' birthday, which is now estimated at somewhere between 7 and 4 BC. It should be noted that there is no such thing as a historical 'year 0'. (13)
The timeline should be read as follows:

The zeroeth year

There are other calendars like the Muslim, Chinese, and Buddhist. They all have the year of their prophet's birth or date of dying as a starting point.
The Jewish one although being a calender does have a different starting point: 3761 B.C 8

In the year 2000 AD the so called millennium bug will strike some computer systems running programs and containing hardware that uses dates without century digits or miscalculate dates. This so called bug causes many governments to overreact spending millions of dollars to repair the bug. See under millennium in the reference section for more details.
Agreed the bug affected some systems and some satellites were off the air, and other systems were shut down. But to say a major systems breakdown would be forthcoming, nay.

 

 

100 AD (app.)

timeflash

Zhang Heng (78-139) was a Chinese mathematician who searched for the value of pi.

His use of the square root of 10 is one of the earliest approximations known. He also was the inventor of a primitive seismograph. (14)

(14)

Heron of Alexandria (also written as Hieron of Alexandria) described the mechanism or apparatus that made use of the so called "sequence control" mechanism.

This mechanism used drums in which pins and gears were mounted to control events that 'laid ahead'.

 

Definition:

Sequence control gives means to foretell the outcome of a sequence of events in advance, without influencing the outcome directly.

Examples of sequence control are a music box with a drum on which pins are attached that strike against the teeth of a comb. Theeth that have predefined lengths and thus possess their own tone. By striking teeth in a predefined sequence a melody will sound.

Sequence control is defined as a lower generation of computer programs.
The operator feeds machines like that with certain limited input and lets the machine run on its own without external control for the outcome: actions to move mechanical contraptions, music or calculations.

 

He also invented a method for analog programming by means of strings or ropes and wrote papers on hydraulics, mechanics, optics and geometry.

He designed a number of automata for sacral ceremonies, which were operated by weight-driven blocks and tackles. With some of them, control information could be programmed in analog form by positions and windings of the rope(11).

 

264 AD



The first advanced knowledge of the value of pi originated in China.

Liu Hui pi (1)
pi defined in China

Above you see a diagram explaining Liu Hui's exhaustive method in 264 AD for finding the value of pi. By describing 3072 sides of a polygon in a circle, Liu Hui was able to overtake the Greeks and compute the value to a fifth decimal place at 3.14159. By the fifth century, the value was computed to ten decimal places. In the fourteenth century this knowledge however was lost in the mists of history.

By the year 1600 pi was only approximately calculated to seven places in Europe, a full twelve hundred years later.(1)

When in the seventeenth century the Jesuits went to China the Chinese were impressed by the European knowledge of pi.

 

276 AD

Eratosthenes proposed a method of finding prime numbers, named subsequently the Sieve of Eratosthenes.

In the future this 'sieve' will be used to determine either the speed of a computer or to detemine a new prime number

 

499 AD

Decimal positional number system and arithmetics used by Aryabhata the Elder (India, 476-550)

 

 

600 AD

chess paly illustration from 6th centuryThe first reference to a chess game is published in India.

In the 18th century a smart businessman will hide a chessplayer in a small contraption to simulate a chess automate. It was so cleverly done that it never was discovered.

In the 20th century computer specialized companies will start building chess playing computers to prove that machines can beat humans. In 2000 IBM will build a successful combination of machine and computer program that can beat the world champion chess (Kasparov).

11th century chess piece

This statuette actually is from the 11th century, the piece shown has a remarkable likeliness to the chess pieces in the picture above.

 

618 AD


Approximately Brahmagupta (India, 598-670) calculates with the zero as a number and with fractions.

Block printing, the first practical method of reproducing writing mechanically was developed during the T'ang dynasty 618-907 in China.

 

724 AD

A Chinese engineer Liang Ling-Can builds the first fully mechanical clock.

A water driven contraption with parts that made the clock to produce a ticking sound. The development of the mechanical clock is very important because early computers and other counting devices will directly inherit the technology from these contraptions of gears and springs. The early robots will never be constructed without the clock technology.(15)

time flash

820 AD

 

alkhowarizmiMuhammed idn Musa Al-Khwarizmi (780 AD - 850 AD) Tashkent cleric, mathematician and professor in Baghdad introduced the Hindu positional, decimal system and the use of zero into Arabic mathematics.

He also extended the work of Diophantis on algebraic equations in a book: Al-jabr wa'l muqabalah. The title which included the word al-jabr (transposition), from which the modern word algebra was derived (Jennifer, 1996). Thanks to the translation of his work into Latin the calculus as he has described came to Europe as well.

In his book he elaborated on a methodology to achieve calculations, hence the word algorithm (should sound like: Alkhwarizm)

It took almost 400 years to recognize Al-Khwarizmi's work when Leonardo Fibonacci (of Pisa) wrote his well known Liber Abacia in 1202 (24). In the very same book he also proposed the decimal system.(16)
Also about a thousand years later Ada Lovelace gave him the honors when she coined the word Algorithm(12)

The House of Wisdom in Bagdad functioned as the center of study and research in the Islamic world of the ninth century. Among its most prominent scholars were al-Khwarizmi and the Banu Musa, or Sons of Moses. The sons of a robber-turned-astrologer, these three brothers, Muhammad, Ahmad, and al-Hasan, showed a gift for learning at an early age. When their father died, the Caliph al-Mamun enrolled them in the House of Wisdom. There they excelled in the study of mathematics, astronomy and mechanics, leading research in those areas along with al-Khwarizmi. They organized and directed the work of translators of ancient Greek scientific texts. Their Book on the Measurement of Plane and Spherical Figures, which demonstrated the Greek methods for determining area and volume, became well-known in the Arab world and in Europe in the Middle Ages.(17)

 

976(c)

Arabic numerals (Indian, gubari format) used in Europe for the first time. The system becomes widely used in the 14th c. (15)

Also the concepts of zero and the positional system is taking hold in Europe. Gradually Arabic numerals replace the Roman', but it takes until the 17th century before the decimal system as we know it now will be universally in use.(16)

 

early 12th century

Peter Abelard (1079 -1142) composes an independent treatise on logic: conversion, opposition, quantity, quality, tense logic, ...

In short a critical philosophical treatise on the contemporary religious doctrine (21) That brought him in much distress. But thanks to his writing the phylosofy of the western world got an enormous stimulance to think beyond the "visible horizon". His logic laid the base for great thinkers.

 

1200 AD

The Indo-Arabic figures are integrally accepted in Europe: 1 2 3 4 5 6 7 8 9 0

This did not come about easily, it took the clergy 200 years to decide that the use of these numbers from the "heretics" had its use.(10)

1202 AD

The work of Al-Khwarizmi (and in particular the words and concepts of algorithm and algebra) is recognized in Europe when Leonardo Fibonacci (of Pisa) writes Liber Abaci (Book of Calculation). (24)

It will be one of the most influential books ever published in mathematics. He introduced the Hindu numerals 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 to Europe, along with the Latinized Arabic word, zephirum, which became zefiro in Italian, and in the Venetian dialect, zero, the name by which we know it in English today.(25)

 

1261 appr.

In China, Yang Hui ( 1238-1298) uses decimal fractions in modern form.

Yang also depicted the first Pascal Triangle, representing prime numbers, to depth 6. Below is an illustration from Chu Shikre to dept 8 created in 1303.(22)

Numeric presentation of pascal's triangle:

 

 

1300 AD

abacusThe Abacus is in general use in China.

time flash 15th century

 

chapter 1 part 1Nexttimeline indexinformation about this sectionGo to main pagesearch this site Last Updated on April 2, 2007 For suggestions  please mail the editors 

 

Footnotes & References