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Numbers — Energy radiant

InventTable — NUMBERS ERA — Energy radiant

InventionDescriptionYearInventorCountry
Sulfur matches 577 AD China
Windmill wind power 650 AD Persia
Black gunpowder sulfur, charcoal, potassium nitrate 850 AD Wei Boyang China
Firelance first firearm 950 AD China
Bomb explosive 1221 AD China
Hand cannon firearm 1250 AD China
Bronze cannon weapon/artillary 1326 AD China
Musket true firearm 1350 AD China

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Leo Dean Jansen

Leo Dean Jansen, MD is a retired orthopedic surgeon with a special interest in the history of technology.  This web page is the culmination of  his efforts to define and organize the history of technology as seen through 2000 inventions.  TECHNOLOGY:  TABLE, TRUTHS, TIMELINE, TOP 100 represents the 4 parts of this project.

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