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Forsalebyowner.com is the United States largest "by owner" real estate website. It provides a real estate advertising and information service that charges a flat fee to property owners who advertise their property on the company’s Website. It created a business model that competed directly with traditional real estate firms, connecting buyers ...
A house for sale by its owner. For sale by owner (FSBO) is the process of selling real estate without the representation of a broker or agent. This is where the homeowner sells directly to a new homeowner. Homeowners may still employ the services of marketing, online listing companies, but can also market their own property.
Artist's depiction of a pair of O'Neill cylinders Interior view, showing alternating land and window segments. An O'Neill cylinder (also called an O'Neill colony, or Island Three) is a space settlement concept proposed by American physicist Gerard K. O'Neill in his 1976 book The High Frontier: Human Colonies in Space. [1]
The counter balance shafts have eccentric weights and rotate in opposite direction to each other, which generates a net vertical force. The balance shaft was invented and patented by British engineer Frederick W. Lanchester in 1907. [1] [2] It is most commonly used in inline-four and V6 engines used in automobiles and motorcycles.
A McKendree cylinder is a type of hypothetical rotating space habitat originally proposed at NASA's Turning Goals into Reality conference in 2000 by NASA engineer Tom McKendree. [1] Like other space habitat designs, the cylinder would spin to produce artificial gravity by way of centrifugal force.
Contra-rotating propellers Contra-rotating propellers on the Rolls-Royce Griffon-powered P-51XR Mustang Precious Metal at the 2014 Reno Air Races. Aircraft equipped with contra-rotating propellers (CRP) [1] coaxial contra-rotating propellers, or high-speed propellers, apply the maximum power of usually a single piston engine or turboprop engine to drive a pair of coaxial propellers in contra ...
The first sale of such an engine was part of a natural gas engine-generator. [ 11 ] Rotary valves are potentially highly suitable for high-revving engines, such as those used in racing sportscars and F1 racing cars, on which traditional poppet valves with springs can fail due to valve float and spring resonance and where the desmodromic valve ...
Gerard Kitchen O'Neill (February 6, 1927 – April 27, 1992) was an American physicist and space activist.As a faculty member of Princeton University, he invented a device called the particle storage ring for high-energy physics experiments. [1]