Skip to Content

Alphabet— Energy radiant

InventTable — ALPHABET ERA — Energy radiant

InventionDescriptionYearInventorCountry
Blast furnace for smelting ores 400 BCE China
Lighthouse for navigation 250 BCE Alexandria, Hellenistic Egypt
Torch sulfur and lime 100 AD Rome

Back to InventTable Era: ALPHABET ERA Classification: Energy radiant

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.

My Work
Information
Contact

leodeanjansentech@gmail.com

Copyright © 2024, Leo Dean Jansen, All Rights Reserved.

Website Design by 1Eighty Digital