This is a list of
inventions, listed in chronological order.
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.
7th millennium BC
4th millennium BC: picto-linguistic writing
early 3rd millennium BC
35th century BC
32nd century BC: Egyptian hieroglyphics
31st century BC
23rd century BC
22nd century BC
21st century BC: Cretan writing
19th century BC
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
400s BC:Catapults in Syracuse
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
1st century
2nd century
3rd century
4th century
5th century
6th century
7th century
8th century
9th century
10th century
- Gunpowder (in China: some ref says 8th century?)
11th century
12th century
13th century
14th century
15th century
16th century
17th century
18th century
19th century
1800s
1810s
1820s
1830s
1840s
1850s
1860s
1870s
1880s
1890s
20th century
1900s
1910s
1920s
1930s
1940s
1950s
1960s
1970s
1980s
1990s
21st century
- put significant 21st century inventions here
