Tin bent, a crackling sound known as the "tin cry" can be heard from the twinning of the crystals. Tin melts at low temperatures of about , the lowest in group 14. The melting point is further lowered to for 11 nm particles. β-tin (the metallic form, or white tin, BCT structure), which is stable at and above room temperature, is malleable. In contrast, α-tin (nonmetallic form, or gray tin), which is stable below , is brittle. α-tin has a diamond cubic crystal structure, similar to diamond, silicon or germanium. α-tin has no metallic properties at all because its atoms form
Anniversary Trouble Anniversary Trouble Anniversary Trouble is a 1935 "Our Gang" short comedy film directed by Gus Meins. It was the 134th "Our Gang" short (46th talking episode) that was released. Spanky's appointment as treasurer of the Ancient and Honery Order of Woodchucks occurs on the same day as his parents' wedding anniversary. Spanky's father (Johnny Arthur) puts money in an envelope as an anniversary gift for his wife (Claudia Dell), then absent-mindedly uses the envelope as a bookmark. Spanky's mother sees Spanky hide the gang's club money in a cookie jar and jumps to the conclusion that Spanky stole her gift