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
A Gift of Magic of someone with immense talent who just doesn’t care about it, and several strong family moments". A Gift of Magic A Gift of Magic is a 1971 novel by Lois Duncan about a grandmother who gives her grandchildren distinct gifts. Brendon is given the gift of music, Kirby is given the gift of dance, and Nancy is given the gift of magic. "A Gift of Magic" was originally published in 1971 by Little, Brown and Company in hardcover. In 2012, the novel was reissued with changes to modernize the content, and changes to the name and ages of some of