The origin of the remarkable Iron Pillar, part of the world-heritage-listed Qutub funerary complex in India’s Delhi, is lost to time. All sorts of ideas have been put forward over the decades.

New Delhi’s Iron Pillar has long fascinated scientists both at home and abroad. But it wasn’t until 2003 that experts cracked the metallurgical mystery behind this unusual attraction.

The Iron Pillar of Delhi, erected over a millennium ago during the Gupta Empire, stands as a marvel of ancient metallurgy. Despite centuries of exposure, it remains remarkably rust-free, defying ...

The Iron Pillar of Delhi, India : Pillar is 7.21m high with a 41cm diameter that stands in the middle of an empty square in the Qutub Complex, New Delhi, India.

Scientists both in India and abroad began studying the iron pillar in Delhi in 1912 to try to figure out why it hadn’t corroded.

Scientists both in India and abroad began studying the iron pillar in Delhi in 1912 to try to figure out why it hadn’t corroded.

The origin of non-uniform surface electrochemical potentials on the Delhi iron pillar has been addressed based on modern electrochemical theory of passivation. Surface potentials have been related to ...

THE freedom from rusting of the famous iron pillar at Delhi has long been a subject of comment and has been attributed by some writers to the peculiar properties of the ancient iron from which it ...