supporting ring beam
11Architecture of ancient Sri Lanka — The architecture of ancient Sri Lanka displays a rich variety of architectural forms and styles. Even in their ruined condition, the buildings of ancient Sri Lanka provides a cultural heritage and architectural significance which is important to… …
12Sherwood Observatory — Infobox Observatory name = Sherwood Observatory caption = View of Sherwood Obseratory looking north. organization = MSAS location = Mansfield, Nottinghamshire, England coords = coord|53|06.5|N|01|13.340|W altitude = 187.9 m (616.5 ft) established …
13Double Island Point Light — Double Island Point Light, 2006 …
14building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
15Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
16Cotton mill — A cotton mill is a factory that houses spinning and weaving machinery. Typically built between 1775 and 1930, mills spun cotton which was an important product during the Industrial Revolution. Cotton mills, and the mechanisation of the spinning… …
17List of Charmed characters — The triquetra symbol used frequently on Charmed to represent the Power of Three The following is a list of characters from the Charmed universe, including the Warner Bros. television series Charmed and its spin off material. The characters were… …
18Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …
19Gerard K. O'Neill — in 1977 Born February 6, 1927 …
20Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
