thermal aging
71M1 Abrams — Infobox Weapon name=M1 Abrams caption=US Marine Corps M1A1 on a live fire exercise in Iraq, 2003 origin=United States type=Main battle tank is vehicle=yes service= used by=United States, Australia, Egypt, Kuwait, Saudi Arabia wars=Gulf War, Iraq… …
72Chevrolet Volt — Manufacturer Chevrolet division of General Motors Also called Holden Volt Opel Ampera Vauxhall Ampera …
73Russia — /rush euh/, n. 1. Also called Russian Empire. Russian, Rossiya. a former empire in E Europe and N and W Asia: overthrown by the Russian Revolution 1917. Cap.: St. Petersburg (1703 1917). 2. See Union of Soviet Socialist Republics. 3. See Russian… …
74space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
75Comparison of analog and digital recording — This article compares the two ways in which sound is recorded and stored. Actual sound waves consist of continuous variations in air pressure. Representations of these signals can be recorded using either digital or analog techniques. An analog… …
76environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …
77Human eye — Infobox Anatomy Name = Eye Caption = Schematic diagram of the human eye. The human eye is similar to most mammalian eyes.Dynamic rangeThe retina has a static contrast ratio of around 100:1 (about 6 1/2 stops). As soon as the eye moves (saccades)… …
78Water pollution — Raw sewage and industrial waste flows across international borders New River passes from Mexicali to Calexico, California. Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans and groundwater). Water p …
79Ford Nuclear Reactor — The Ford Nuclear Reactor was a facility at the University of Michigan in Ann Arbor dedicated to investigating the peaceful uses of atomic energy. It was a part of the Michigan Memorial Phoenix Project, a living memorial created to honor the… …
80Sauna — For other uses, see Sauna (disambiguation). A traditional Finnish shore sauna view …
