hand furnace
91petroleum refining — Introduction conversion of crude oil into useful products. History Distillation of kerosene and naphtha The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …
92Mechanical fan — Household electric box fan with a propeller style blade A mechanical fan is a machine used to create flow within a fluid, typically a gas such as air. A fan consists of a rotating arrangement of vanes or blades which act on the air. Usually, it… …
93Daniel 3 — 1 Nebuchadnezzar the king made an image of gold, whose height was threescore cubits, and the breadth thereof six cubits: he set it up in the plain of Dura, in the province of Babylon. 2 Then Nebuchadnezzar the king sent to gather together the… …
94Thermostat — This article is about the temperature regulating device. For the French cooking oven temperature scale, see Gas Mark#Other cooking temperature scales. Honeywell s iconic The Round model T87 thermostat, one of which is in the Smithsonian …
95heating — I Process of raising the temperature of an enclosed space. Heat can be delivered by convection, radiation, and thermal conduction. With the exception of the ancient Romans, who developed a form of central heating, most cultures relied on direct… …
96Steel — For other uses, see Steel (disambiguation). The steel cable of a colliery winding tower …
97Blacksmith — For other uses, see Blacksmith (disambiguation). Blacksmith A blacksmith at work Occupation …
98Thermae — This page is on buildings used for Roman bathing. For the activity in general, see Ancient Roman bathing. The terms balnea or thermae were the words the ancient Romans used for the buildings housing their public baths.Most Roman cities had at… …
99Speedwell Forge — was built in 1760 in Elizabeth Township, Lancaster County, Pennsylvania. It operated continuously until 1854, when it closed as iron production moved west. The following are notes collected while researching the associated ironmaster s mansion… …
100Cowans Gap State Park — For the Ohio State Park, see Cowan Lake State Park. Cowans Gap State Park Pennsylvania State Park Natural Monument (IUCN III) …
