- descending vertical flue
- вертикал
English-Russian dictionary of chemistre. 2014.
English-Russian dictionary of chemistre. 2014.
Chimney sweep — Chimney sweeper redirects here. For the geometer moth, see Odezia atrata. Chimney sweep in the 1850s A chimney sweep is a worker who clears ash and soot from chimneys. The chimney uses the pressure difference caused by a hot column of gas to… … Wikipedia
Eiger — For other uses, see Eiger (disambiguation). Eiger The north face of the Eiger Elevation … Wikipedia
technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… … Universalium
coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… … Universalium
History of rail transport in Great Britain to 1830 — The history of rail transport in Great Britain to 1830 covers the period up to the opening of the Liverpool and Manchester Railway, the world s first intercity passenger railway operated solely by steam locomotives. The earliest form of railways … Wikipedia
Convection — This figure shows a calculation for thermal convection in the Earth s mantle. Colors closer to red are hot areas and colors closer to blue are cold areas. A hot, less dense lower boundary layer sends plumes of hot material upwards, and likewise,… … Wikipedia