InternetCitizen2@lemmy.world to Lemmy Shitpost@lemmy.world · 3 days agoVirgin Physicistslemmy.worldimagemessage-square111fedilinkarrow-up1871arrow-down16 cross-posted to: [email protected]
arrow-up1865arrow-down1imageVirgin Physicistslemmy.worldInternetCitizen2@lemmy.world to Lemmy Shitpost@lemmy.world · 3 days agomessage-square111fedilink cross-posted to: [email protected]
minus-squareA_A@lemmy.worldlinkfedilinkarrow-up3·edit-23 days agoQuantum Ampere Standard https://www.nist.gov/noac/technology/current-and-voltage/quantum-ampere-standard . there also been research for defining a quantum volt and quantumly stable resistors https://www.nist.gov/noac/technology/current-and-voltage Quantum-based measurements for voltage and current are moving toward greater miniaturization P.S. : https://en.m.wikipedia.org/wiki/Quantum_Hall_effect Quantum Hall effect → Applications → Electrical resistance standards : (…) Later, the 2019 revision of the SI fixed exact values of h and e, resulting in an exact RK = h/e2 = 25812.80745… Ω. (this is precise to at least 10 significant digits)
Quantum Ampere Standard
https://www.nist.gov/noac/technology/current-and-voltage/quantum-ampere-standard
.
there also been research for defining a quantum volt and quantumly stable resistors
https://www.nist.gov/noac/technology/current-and-voltage
Quantum-based measurements for voltage and current are moving toward greater miniaturization
P.S. :
https://en.m.wikipedia.org/wiki/Quantum_Hall_effect
Quantum Hall effect →
Applications →
Electrical resistance standards :
(this is precise to at least 10 significant digits)