Technology

Iron Pillar in Delhi

The iron pillar in Delhi is an amazing object. At over 7 meters in length and weighing over three tonnes, it was made about 16 centuries ago from forge-welded wrought iron pieces. It is so corrosion resistant that it has survived the ravages of nature, and is strong enough that it even withstood destruction by cannon fire by Nadir Shah’s army about three centuries ago.

The people who cast that pillar had the technology to make that pillar. Which means that they knew how to make an iron pillar which resists corrosion for over a millennium and a half. The operative phrase in the previous sentence is “knew how to” — which is the definition of technology that we focus on. Continue reading “Technology”

%d bloggers like this: