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
Telugu wedding ceremony The ceremony is held under a "Kaḷyāṇa Maṇḍapaṃ" or wedding pavilion decorated with fresh flowers. The "Nādasvaram" (also called the "Shehnai" in North India) is an Indian musical instrument that traditionally accompanies most Telugu weddings. Each element in the ceremony is connected and is given special importance. Historically, the groom would ride an elephant to the bride's home where the wedding is supposed to take place. This practice is called "Gajaarohana". Today this tradition is declining. Some marriage ceremonies are held in a temple in the presence of god, but most are conducted outside because of the number of people