Tin cry Tin cry A tin cry is the characteristic sound heard when a bar of tin is bent. Variously described as a "screaming" or "crackling" sound, the effect is caused by the crystal twinning in the metal. The sound is not particularly loud, despite terms like "crying" and "screaming". It is very noticeable when a hot-dip tin coated sheet metal is bent at high speed over rollers during processing. The tin cry is often demonstrated as a simple science experiment. The bar of tin will "cry" repeatedly when bent until it breaks. The experiment can then be recycled by melting and
Gift white elephant. One means of reducing the mismatch between the buyer and receivers' tastes is advance coordination, often undertaken in the form of a wedding registry or Christmas list. Wedding registries in particular are often kept at a single store, which can designate the exact items to be purchased (resulting in matching housewares), and to coordinate purchases so the same gift is not purchased by different guests. One study found that wedding guests who departed from the registry typically did so because they wished to signal a closer relationship to the couple by personalizing a gift, and also found that