- @Amrapali #img-anno http://qph.is.quoracdn.net/main-qimg-3ed0199a346851f0dcc445ce8247a060?convert_to_webp=true {u'shapes': [{u'geometry': {u'y': 0.06431852986217458, u'x': 0.8804123711340206, u'width': 0.06804123711340204, u'height': 0.05972434915773353}, u'type': u'rect'}], u'src': u'http://qph.is.quoracdn.net/main-qimg-3ed0199a346851f0dcc445ce8247a060?convert_to_webp=true', u'context': u'http://testapp.swtr.us/annotate?where=http://qph.is.quoracdn.net/main-qimg-3ed0199a346851f0dcc445ce8247a060?convert_to_webp=true', u'comment': u'The Iron Pillar located in Delhi, India, is a 7 m (23 ft) column in the Qutb complex, notable for the rust-resistant composition of the metals used in its construction.\n\nIt was constructed about 1600 years ago and has remained rust proof despite being made of 98% wrought Iron !\n\nThe process of construction still remains a mystery and even today no such process/technique is known to the modern world resulting in losses to the tune of Billions of dollars in Corrosion.\n'} created: Mon, 21 Jul 2014, 04:23 PM UTC