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The possibility of negative temperatures was first predicted by Lars Onsager in 1949. [4] Onsager was investigating 2D vortices confined within a finite area, and realized that since their positions are not independent degrees of freedom from their momenta, the resulting phase space must also be bounded by the finite area.
Decimal degrees (DD) is a notation ... The appropriate decimal places are used, [1] negative values are given using a hyphen-minus character. [2] ... 11.1 m: 10.2 m:
Negative numbers are usually written with a minus sign in front. For example, −3 represents a negative quantity with a magnitude of three, and is pronounced "minus three" or "negative three". Conversely, a number that is greater than zero is called positive; zero is usually (but not always) thought of as neither positive nor negative. [2]
In 1908 he managed to lower the temperature to less than −269 °C (−452.2 F, 4 K), which is four degrees above absolute zero. Only in this exceptionally cold state will helium liquefy; the boiling point of helium being at −268.94 °C (−452.092 F). Kamerlingh Onnes received a Nobel Prize for his achievement. [9]
Minimum temperature map of the United States from 1871–1888 Maximum temperature map of the United States from 1871–1888. The following table lists the highest and lowest temperatures recorded in the 50 U.S. states, the District of Columbia, and the 5 inhabited U.S. territories during the past two centuries, in both Fahrenheit and Celsius. [1]
From Boeing's turbulence and a catastrophic hurricane, to Donald Trump's election victory, "Sunday Morning" host Jane Pauley looks back at key events of a year that was monumental.
Whereas a physical image can be either ‘inverted’ or ‘not inverted’, a digital image can exhibit a partial degree of colour inversion [11] in so far as the hue can be altered by plus or minus some number of degrees which is greater than zero degrees but less than 180 degrees.
Coffee beans are hitting record high prices not seen in nearly 50 years after difficult growing seasons among some of the world's top producing regions. Earlier this week, the Wall Street Journal ...