Berkas:NISTvoltChip.jpg

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Deskripsi
English: One-volt en:voltage standard developed by en:NIST (formerly en:National Bureau of Standards (NBS) until 1988) based on an array of 3020 superconducting en:Josephson junctions, operating at liquid-helium temperatures. Microwave energy fed into the finguide structure on the left generates a voltage across the 4 chains of junctions on the right.
Tanggal apparently 1985-1988
Sumber NIST paper A Practical Josephson Voltage Standard at One Volt, Figure 1
Pembuat NBS

Lisensi

Public domain
This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

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Voltage standard based on Josephson junctions

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Tanggal/WaktuMiniaturDimensiPenggunaKomentar
terkini31 Maret 2017 11.22Miniatur versi sejak 31 Maret 2017 11.221.421 × 878 (207 KB)Materialscientistcontrast
16 Juli 2009 06.20Miniatur versi sejak 16 Juli 2009 06.201.421 × 878 (86 KB)RNLionHigher-resolution view from same NIST source paper to show greater detail.
11 September 2005 13.10Miniatur versi sejak 11 September 2005 13.10472 × 293 (123 KB)ArnoldReinholdSuperconduction chip used by w:NIST to define the w:volt. The chip contains an array of 3020 w:Josephson junctions and operates at liquid w:Helium temperatures. Microwave energy is fed to the junctions through the finguide on the left. Fr

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