george rhoads born january 27, 1926 is a contemporary american painter, sculptor, and origami master. he is best known for his whimsical audiokinetic sculptures in airports, science museums, shopping malls, children’s hospitals, and other public places throughout the world.
a model rocket is a small rocket designed to reach low altitudes e.g., 100–500 m 330–1,640 ft for 30 g 1.1 oz model and be recovered by a variety of means. according to the united states national association of rocketry nar safety code, model rockets are constructed of paper, wood, plastic and other lightweight materials.
a fume hood sometimes called a fume cupboard or fume closet is a type of local ventilation device that is designed to limit exposure to hazardous or toxic fumes, vapors or dusts description. a fume hood is typically a large piece of equipment enclosing five sides of a work area, the bottom of which is most commonly located at a standing work height. .
balfron tower is a 26-storey residential building in poplar, tower hamlets, east london.built in a brutalist style, it forms part of the brownfield estate, an area of social housing between chrisp street market and the a12 northern approach to the blackwall tunnel.it was designed by ernő goldfinger in 1963 for the london county council, built 1965–67 by the glc, and has been a grade ii .
a modern type of evacuation slide is the vertical spiral escape chute, which is a common means of evacuation for buildings and other structures. history. one of the first fire escapes of any type was invented in 18th-century england. in 1784, daniel maseres, of england, invented a machine called a fire escape, which, being fastened to the window, would enable a person to descend to the street .
the mathematician bruno abakanowicz invented the spirograph between 1881 and 1900. it was used for calculating an area delimited by curves. ding toys based on gears have been around since at least 1908, when the marvelous wondergraph was advertised in the sears catalog. an article describing how to make a wondergraph ding machine appeared .
lockheed martin f-35 lightning ii procurement is the planned selection and purchase of the lockheed martin f-35 lightning ii, also known as the joint strike fighter jsf by various countries.. the f-35 lightning ii was conceived from the start of the project as having participation from many countries, most of which would both contribute to the manufacture of the aircraft and procure it for .