vertical furnace
51Verneuil process — The Verneuil process, also called flame fusion, was the first commercially successful method of manufacturing synthetic gemstones, developed in 1902 by the French chemist Auguste Verneuil. It is primarily used to produce the ruby and sapphire… …
52Parque Nacional del Valle de la Muerte — Para el valle en sí, véase Valle de la Muerte. Parque nacional Valle de la Muerte (Death Valley National Park) Categoría UICN II (Parque nacional) …
53coal 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… …
54Elliott Cresson Medal — given to Emile Berliner in 1913 Presented by Franklin Institute Country US …
55Sun path — refers to the apparent significant seasonal and hourly positional changes of the sun (and length of daylight) as the Earth rotates, and orbits around the sun. To effectively gather solar energy, a solar collector (glass, solar panel, etc.) should …
56Thermal power station — Republika Power Plant, a thermal power station in Pernik, Bulgaria …
57Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… …
58Tinker Juarez — Personal information Full name David Juarez Nickname Tinker , Hollifield Flash Born March 4, 1961 (1961 03 04) (age 50) Downey, California, United States Hei …
59Fire-tube boiler — A fire tube boiler is a type of boiler in which hot gases from the fire pass through one or more tubes within the boiler. It is one of the two major types of boilers, the other being the water tube boiler. A fire tube boiler can be either… …
60Flue gas stack — ] A flue gas stack is a type of chimney, a vertical pipe, channel or similar structure through which combustion product gases called flue gases are exhausted to the outside air. Flue gases are produced when coal, oil, natural gas, wood or any… …
