Scuba divers and others use the word atmosphere and atm in relation to pressures that are relative to mean atmospheric pressure at sea level (1.013 bar). For example, a partial pressure of oxygen is calibrated typically using air at sea level, so is expressed in units of atm.The old European unit technical atmosphere (at) is equal to 1 kilogram-force per square centimetre (kgf/cm 2), 7004980665000000000â 98066.5 Pa.or example, a partial pressure of oxygen is calibrated typically using air at sea level, so is expressed in units of atm. The old European unit technical atmosphere (at) is equal to 1 kilogram-force per square centimetre (kgf/cm 2), 7004980665000000000â 98066.5 Pa.
Tripoli ( /trÉ¨poÊlÉ/ tri-poh-lÉ) is a city in Bremer County, Iowa, United States. The population was 1310 at the 2000 census. It is part of the WaterlooâCedar Falls Metropolitan Statistical Area. Tripoli is located at 42Â°48â²21â³N 92Â°15â²27â³W / 42.80583Â°N 92.2575Â°W / 42.80583; -92.2575 (42.805736, -92.257580). According to the United States Census Bureau, the city has a total area of 1.4 square miles (3.6 kmÂ²), all of it land.
Perry is a city in Houston county in the U.S. state of Georgia. It is part of the Warner Robins, Georgia Metropolitan Statistical Area. The population was 9,600 at the 2000 census. This town is the county seat of Houston County ( /haÊstÉn/). The city is in the Macon metropolitan area. Founded in 1823 as Wattsville, the town was located near the center of Houston County and served as its courthouse. The name was soon changed to honor Commodore Oliver Hazard Perry, a hero of the War of 1812.