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 sari sari at the wedding ceremony and change into other traditional Indian wear afterwards (lehenga, choli, etc.). The types of wedding saris include Kanchipuram wedding sari, Banarasi wedding sari, Sambalpuri wedding sari, Assam silk, Gota sari, Resham sari, Zardosi sari, aithani sari, Bandhani sari, Neriyathum sari. Wedding sari A wedding sari is the traditional wedding dress of Indian women. The sari is traditionally red, with golden embroidery. Saint Thomas Christians from Kerala usually wear golden, white or cream saris with gold embroidery. Red saris are the traditional garment choice for brides in Indian culture. Sari fabric is also traditionally silk. Over