frame lattice beam
31Dirac equation — Quantum field theory (Feynman diagram) …
32Nationality Rooms — Coordinates: 40°26′40″N 79°57′12″W / 40.444426°N 79.953423°W / 40.444426; 79.953423 …
33X-ray — [ 22 December 1895 and presented to Professor Ludwig Zehnder of the Physik Institut, University of Freiburg, on 1 January 1896. The dark oval on the third finger is a shadow produced by her ring. [cite book last = Kevles first =Bettyann Holtzmann …
34List of architecture topics — This page aims to list all topics related to architecture. This is so that those interested in the subject can monitor changes to the pages by clicking on Related changes in the sidebar. It is also to see the gaps in Wikipedia s coverage of the… …
35materials science — the study of the characteristics and uses of various materials, as glass, plastics, and metals. [1960 65] * * * Study of the properties of solid materials and how those properties are determined by the material s composition and structure, both… …
36percussion instrument — a musical instrument, as the drum, cymbal, triangle, xylophone, or piano, that is struck to produce a sound, as distinguished from string or wind instruments. [1870 75] * * * A musical instrument that is struck (or sometimes shaken or scraped) to …
37geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …
38Cantilever — For the figure skating element, see Cantilever (figure skating). A schematic image of two cantilevers. The top example has a full moment connection (like a horizontal flag pole bolted to the side of a building). The bottom example is created by… …
39Reinforced concrete — is concrete in which reinforcement bars ( rebars ), reinforcement grids, plates or fibers have been incorporated to strengthen the concrete in tension. It was invented by French gardener Joseph Monier in 1849 and patented in 1867.[1] The term… …
40Daring class destroyer (1949) — For other destroyer classes of the same name, see Daring class destroyer. The Australian Daring class destroyer HMAS Vampire on display at the Australian National Maritime Museum Class overview …
