Tin pest related problems such as tin whiskers. At 13.2 °C (about 56 °F) and below, pure tin transforms from the silvery, ductile metallic allotrope of β-form "white tin" to the brittle, nonmetallic, α-form "grey tin" with a diamond cubic structure. The transformation is slow to initiate due to a high activation energy but the presence of germanium (or crystal structures of similar form and size) or very low temperatures of roughly −30 °C aids the initiation. There is also a large volume increase of about 27% associated with the phase change to the nonmetallic low temperature allotrope. This frequently makes tin
Wedding Anniversary Nana Patekar and Mahie Gill doing in this flick?" Wedding Anniversary Wedding Anniversary is an Indian Hindi-language romantic drama film, directed by Shekhar S Jha, produced by Kumar V Mahant and Achut Naik, and presented by Bharat Shah. The film stars Nana Patekar and Mahie Gill in leading roles and was released on 24 February 2017. "Kahani" (Mahie Gill) and her husband "Nirbhay" (Priyanshu Chatterjee) had planned to celebrate their wedding anniversary in Goa but due to some last minute work "Nirbhay" stays back and "Kahani" has to travel alone. While she waits for her husband in Goa, she picks