i-shaped cross-section
51channel iron — noun : channel I 3g * * * a rolled steel or iron shape having a U shaped cross section, with two narrower sides at right angles to a broader one. See illus. under shape. Also called channel bar. [1885 90] * * * channel iron or channel bar, a… …
52Instability — [ Hydrodynamics simulation of the Rayleigh–Taylor instability [Shengtai Li, Hui Li Parallel AMR Code for Compressible MHD or HD Equations (Los Alamos National Laboratory) [http://math.lanl.gov/Research/Highlights/amrmhd.shtml] ] ] Instability in… …
53Mast (sailing) — Sails on a small ship as seen from below The mast of a sailing vessel is a tall, vertical, or near vertical, spar, or arrangement of spars, which supports the sails. Large ships have several masts, with the size and configuration depending on the …
54Tyrannosauroidea — Taxobox name = Tyrannosauroids fossil range = Jurassic – Late Cretaceous image width = 200px image caption = Dryptosaurus image caption = Illustration of Dryptosaurus aquilunguis . regnum = Animalia phylum = Chordata classis = Sauropsida… …
55Ceratosauridae — Opisthokonta Ceratosaurids Temporal range: Late Jurassic Early Cretaceous Restoration of Ceratosaurus nasicornis Scien …
56Atherosclerosis — For the journal, see Atherosclerosis (journal). Atherosclerosis Classification and external resources The progression of atherosclerosis (size exaggerated; see text) ICD 10 …
57Came — A came is a divider bar used between small pieces of glass to make a larger glazing panel, sometimes referred to as leaded glass. This process is then referred to as leading . Cames are mostly made of soft metals such as lead, zinc, copper or… …
58impact crater — Astron., Geol. crater (def. 2). [1890 95] * * * ▪ landform Introduction any feature on the continents that has been created by the impact of cosmic bodies (meteorites, asteroids (asteroid), or comets (comet)) on the Earth s surface. In fact …
59M16 rifle — Rifle, 5.56 mm, M16 From top to bottom: M16A1, M16A2, M4A1, M16A4 Type Assault rifle Place  …
60Bow collector — A bow collector is one of the three main devices used on tramcars to transfer electric current from the wires above to the tram below. While once very common in continental Europe, it has now been largely replaced by the pantograph. OriginsWhen… …
