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Timeline of inventionThis is a list of inventions, listed in chronological order.
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Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same time, or may be invented in an impractical form many years before another inventor improves the invention into a practical form. Where there is ambiguity, the date of the first practical, fielded, version of the invention should be used here.
4th millennium BC: picto-linguistic writing
early 3rd millennium BC
32nd century BC: Egyptian hieroglyphics
21st century BC: Cretan writing
18th century BC: Linear A - Hagia Triada[?]
16th century BC: Phonetic spelling developed by Phoenicians
15th century BC: Linear B - mainland[?] Greece or Knossus
10th century BC: Rustproof Iron[?] - India
7th century BC: Coinage, Discovery of irrational numbers
460s BC : First atomic theory - Democritus
410s BC: heliocentric solar system with spherical Sun ,Moon, Venus, Mercury, Mars, Jupiter, Saturn - Philolaus
350s BC: rotation of Earth[?] -Hereclides[?]
225s BC[?]: measurement of Circumference of the Earth - Eratosthenes
220s BC
150s BC: Astrolabe - Hipparchus
100s BC: Glass-blowing[?] in Syria
2nd century
Stenson well," the Bishop declared, "and I am
taking such a step as you suggest. He, at any rate, if others in
teeth flashed for a moment, and his mouth came together with a
summon the Council to come together tomorrow at.
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