Reason for choosing the topic iron pillar at mehrauli for history project (in detail , vast)
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The Iron pillar of Delhi is 23 feet 8 inches high (7.2 metres) with 16 inches diameter structure, was constructed by a "King Chandra", probably Chandragupta II, and is currently standing in the Qutb complex at Mehrauli in Delhi, India.[1][2] It is famous for the rust-resistant composition of the metals used in its construction.
Iron pillar of Delhi
QtubIronPillar.JPG
The iron pillar of Delhi
Iron pillar of Delhi is located in IndiaIron pillar of Delhi
Location in India
Coordinates
28°31′28.76″N 77°11′6.25″E
Location
Qutb complex at Mehrauli in Delhi, India
Height
7.21 m (23 ft 8 in)
Dedicated to
Vishnu
The pillar has attracted the attention of archaeologists and materials scientists because of its high resistance to corrosion and has been called a "testimony to the high level of skill achieved by the ancient Indian iron smiths in the extraction and processing of iron".[3][4] The corrosion resistance results from an even layer of crystalline iron(III) hydrogen phosphate hydrate forming on the high-phosphorus-content iron, which serves to protect it from the effects of the Delhi climate.[3]
The pillar weighs over 5,865 kg (13,000 lb) and is thought to have been erected in what is now Udayagiri and reused by one of the Gupta monarchs in approximately 402 CE, though the precise date and location are a matter of dispute.[5]
Physical description
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The iron pillar stands within the courtyard of Quwwat-ul-Islam Mosque
The height of the pillar, from the top of its capital to the bottom of its base, is 7.21 m (23 ft 8 in), 1.12 m (3 ft 8 in) of which is below ground. Its bell pattern capital is 1.07 m (3 ft 6 in) in height, and its bulb-shaped base is 0.71 m (2 ft 4 in) 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 420 mm (17 in), and its upper diameter is 306 mm (12 in). It is estimated to weigh more than six tonnes (13,228 lb).[6]