plastic instability
51heterocyclic compound — Any of a class of organic compounds whose molecules contain one or more rings of atoms with at least one atom (the heteroatom) being an element other than carbon, most frequently oxygen, nitrogen, or sulfur. As in regular cyclic hydrocarbons,… …
52Mary Rose — For later ships with the same name, see HMS Mary Rose. For the play by J.M. Barrie, see Mary Rose (play). The remnants of the Mary Rose undergoing conservation in Portsmouth …
53M16 rifle — Rifle, 5.56 mm, M16 From top to bottom: M16A1, M16A2, M4A1, M16A4 Type Assault rifle Place  …
54Contact lens — Contacts redirects here. For the software application, see Address book. A pair of contact lenses, positioned with the concave side facing upward …
55Orthopedic surgery — Intervention MeSH D019637 …
56Billiard ball — Cueball redirects here. For the video game, see Jimmy White s 2: Cueball. Cue balls from (left to right): Russian pool and kaisa 68 mm (2 11⁄16 …
57Structural mechanics — Space frame used in a building structure Pipe frame used in a competi …
58Rasti — is a Construction set|construction toy made from plastic, similar to Lego and Mis Ladrillos, that was produced by the Knittax company in Argentina between the 1960s and the 1970s.ConstructionThe construction method allows joining pieces with some …
59Cellulose acetate film — Cellulose acetate film, or safety film, is used in photography as a base material for photographic emulsions. It was introduced in the early 20th century by film manufacturers as a safe film base replacement for unstable and highly flammable… …
60Kite types — Colorful delta wing kite Kites are tethered flying objects which fly by using aerodynamic lift, requiring wind, (or towing), for generation of airflow over the lifting surfaces. Contents 1 Kite …
