Iron pillar of Delhi
The selectable maps and pictures within this page illustrate material related to Iron pillar of Delhi. The Iron Pillar located in Delhi, India, is a column in the Qutub complex, notable for the rust-resistant composition of the metals used in its construction.
The pillar has attracted the attention of archaeologists and metallurgists and has been called "a testament to the skill of ancient Indian blacksmiths" because of its high resistance to corrosion. The corrosion resistance results from an even layer of crystalline iron hydrogen phosphate forming on the high phosphorus content iron, which serves to protect it from the effects of the local Delhi climate.
The height of the pillar, from the top of its capital to the bottom of its base, isof which is below ground. Its bell pattern capital is in height, and its bulb-shaped base is high. The base rests on a grid of iron bars soldered with lead into the upper layer of the dressed stone pavement. The pillar's lower diameter is, and its upper diameter . It is estimated to weigh more than six tons.
A fence was erected around the pillar in 1997 in response to damage caused by visitors. There is a popular tradition that it was considered good luck if one could stand with one's back to the pillar and make one's hands meet behind it. The practice led to significant wear and visible discoloration on the lower portion of the pillar.
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The first location of the pillar has been debated.
While the pillar was certainly used as a trophy in the building the Quwwat-ul-Islam mosque and the Qutb complex, its original location, whether on the site itself or from elsewhere, has frequented discussion. A summary of views on this subject and related matters was collected in volume edited by M. C. Joshi and published in 1989. More recently, opinions have been summarised again by Upinder Singh in her book Delhi: Ancient History.Want to read more? Wikipedia contains even more information about Iron pillar of Delhi.