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Latest Kelvin Stories

2013-07-11 12:26:21

Scientists at the UK's National Physical Laboratory (NPL) have performed the most accurate measurement yet of the Boltzmann constant. While the impact of such an achievement is not immediately obvious, the measurement could revolutionize the way we define temperature, replacing the standard method that has been used for over 50 years. The new measurement is 1.380 651 56 (98) × 10−23 J K−1, where the (98) shows the uncertainty in the last...

2011-09-20 12:54:47

PTB scientists determine a new value of the Boltzmann constant - The international community of scientists wants to redefine all base units with the aid of fundamental constants Metrologists are measurement artists who are very precise - in the case of the Boltzmann constant up to the sixth decimal place. Whoever is able to determine it very exactly will cause a small revolution in the field of worldwide temperature measurement: The temperature unit will then no longer be based - as...

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2010-09-29 06:35:00

Imagine building a car chassis without a blueprint or even a list of recommended construction materials. In a sense, that's precisely what a team of engineers at the NASA Goddard Space Flight Center in Greenbelt, Md., did when they designed a one-of-a-kind structure that is one of 9 key new technology systems of the Integrated Science Instrument Module (ISIM). Just as a chassis supports the engine and other components in a car, the ISIM will hold four highly sensitive instruments,...

2009-09-28 14:38:00

Physicists at the University of California-San Diego say they've created speedy integrated computer circuits capable of working in very cold environments. The circuits, built with particles called excitons, can operate at commercially cold temperatures, bringing the possibility of a new type of extremely fast computer based on excitons closer to reality, researchers said. The accomplishment follows the team's demonstration last summer of an integrated circuit capable of working at 1.5 degrees...

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2009-09-28 06:55:00

Physicists at UC San Diego have successfully created speedy integrated circuits with particles called "excitons" that operate at commercially cold temperatures, bringing the possibility of a new type of extremely fast computer based on excitons closer to reality. Their discovery, detailed this week in the advance online issue of the journal Nature Photonics, follows the team's demonstration last summer of an integrated circuit"”an assembly of transistors that is the building block for...


Word of the Day
siliqua
  • A Roman unit of weight, 1⁄1728 of a pound.
  • A weight of four grains used in weighing gold and precious stones; a carat.
  • In anatomy, a formation suggesting a husk or pod.
  • The lowest unit in the Roman coinage, the twenty-fourth part of a solidus.
  • A coin of base silver of the Gothic and Lombard kings of Italy.
'Siliqua' comes from a Latin word meaning 'a pod.'
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