practical use
121Esperanto orthography — Esperanto …
122Shen Kuo — Infobox Scientist name = Shen Kuo zh. 沈括 image width = 280px caption = Shen Kuo, a Chinese scientist famous for his concepts of true north and land formation, among others. (Modern artist s impression) birth date = 1031 birth place = Qiantang… …
123Indian mathematics — mdash;which here is the mathematics that emerged in South Asia from ancient times until the end of the 18th century mdash;had its beginnings in the Bronze Age Indus Valley civilization (2600 1900 BCE) and the Iron Age Vedic culture (1500 500 BCE) …
124Cottage garden — See also: Garden design Roses, clematis, a thatched roof: a cottage garden in Brittany. The cottage garden is a distinct style of garden that uses an informal design, traditional materials, dense plantings, and a mixture of ornamental and edible… …
125History of timekeeping devices — For thousands of years, devices have been used to measure and keep track of time. The current sexagesimal system of time measurement dates to approximately 2000 BC, in Sumer. The Ancient Egyptians divided the day into two 12 hour periods, and… …
126air-cushion machine — ▪ vehicle Introduction also called ground effect machine, or hovercraft, any of the machines characterized by movement in which a significant portion of the weight is supported by forces arising from air pressures developed around the… …
127Aerial refueling — A C 17 Globemaster refuels through the boom of a Boeing KC 135 Stratotanker …
128Ethics — • Many writers regard ethics as any scientific treatment of the moral order and divide it into theological, or Christian, ethics (moral theology) and philosophical ethics (moral philosophy) Catholic Encyclopedia. Kevin Knight. 2006. Ethics …
