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ground zero ground zero
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absolute zero absolute zero
absolute zero the zero point of the ideal gas temperature scale, denoted by 0 degrees on the Kelvin and Rankine temperature scales, which is equivalent to -273.15°C and -459.67°F. For most gases there is a linear relationship between temperature and pressure (see gas laws ), i.e.,... Read more
zero zero
zero that number which, when added to any number, leaves the latter unchanged; its symbol is 0. The introduction of zero into the decimal system was the most significant achievement in the development of a number system in which calculation with large numbers was feasible. Without it, modern... Read more
zero-age main sequence zero-age main sequence
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Zero Corp Zero Corp
Zero Corporation 500 West 200 NorthNorth Salt Lake, Utah 84054U.S.A.Telephone: (801) 298-5900Toll Free: (800) 500-ZEROFax: (801) 299-7389Web site: http://www.zerocorp.com Private Company Incorporated: 1952 as Zierold Sheet Metal Co.Employees: 300Sales: $25 million (2005 est.)NAIC: 326199 All... Read more
Heike Kamerlingh Onnes Heike Kamerlingh Onnes
Heike Kamerlingh Onnes , 1853-1926, Dutch physicist. He was, from 1882, professor of physics at the Univ. of Leiden. He made important studies of the properties of helium and, in attempting to solidify it, produced a temperature within one degree of absolute zero. In the course of his low... Read more
Laws of thermodynamics Laws of thermodynamics
thermodynamics, laws of laws describing the general direction of physical change in the universe; the first law of thermodynamics states the equivalence of heat and work and reaffirms the principle of conservation of energy; the second law of thermodynamics states that heat does not of itself pass... Read more
Zero population growth Zero population growth
Zero Population Growth THE MALTHUSIAN ERA THE ZERO POPULATION GROWTH MOVEMENT PEAKS TOWARD ZERO POPULATION GROWTH BIBLIOGRAPHY The term zero population growth encompasses both an urgent call to reduce the number of human beings and a neutral description of anticipated future demographic... Read more
Zero Gravity Zero Gravity
Zero Gravity The effects of gravity are so commonplace that people rarely notice them. People are used to living under the pressure of Earth's gravity (1 G), and so when the amount of gravitational force they experience increases or decreases, the difference becomes... Read more
Kelvin temperature scale Kelvin temperature scale
Kelvin temperature scale a temperature scale having an absolute zero below which temperatures do not exist. Absolute zero , or 0°K, is the temperature at which molecular energy is a minimum, and it corresponds to a temperature of -273.15° on the Celsius temperature scale . The Kelvin... Read more

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U. Wisconsin prof, students search for 'absolute zero'
News Wire article from: University Wire ...1999 (Badger Herald) (U-WIRE) MADISON, Wis...and a pair of UW-Madison students are working on a way to bring...hunting down the elusive absolute zero. At zero degrees Kelvin, or about...1999 Badger Herald via U-WIRE

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