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
Happy Anniversary (1959 film) Happy Anniversary (1959 film) Happy Anniversary is a 1959 picture starring David Niven and Mitzi Gaynor. Directed by David Miller, the movie's cast also included Carl Reiner and a young Patty Duke. Duke's next film, "The Miracle Worker", would earn her an Academy Award. Chris Walters is a happily married father of two. For his 13th wedding anniversary, he sneaks home with a gift for wife Alice, a diamond brooch, and with a desire to have a romantic interlude. Interruptions ensue. If it isn't their children, Debbie, and Okkie, needing something, it's their maid, Millie, or it's Alice's mother, Lilly,