The ampere and the electrical units in the quantum era - Page 1
Forum section: electronics / general

author: notfaded1
author_rank: Frequent Contributor
timestamp: November 12, 2019, 05:41:41 pm
content: Someone may have posted this but I found it current and really interesting paper on current state on the quest for the quantum calibrator. The quantum calibrator consists in a user friendly device realizing accurately the main electrical units, i.e. the ampere, the volt, the ohm, and the farad from the Planck constant h and the elementary charge e only. Interesting reading if you've not kept current on technology.The forum won't let me attach the pdf... says it's too large so you can find it here:https://www.sciencedirect.com/science/article/pii/S1631070519300179Click the download pdf button at top of page to get the whole paper... it's well written. It's explains where we are today and some future research is headed in the quest for least uncertainty.Bill

author: awallin
author_rank: Frequent Contributor
timestamp: November 12, 2019, 05:56:37 pm
content: also, you might need an atomic clock generating the SI second, to get a frequency that drives your quantum electric experiments...

author: notfaded1
author_rank: Frequent Contributor
timestamp: November 12, 2019, 06:33:52 pm
content: It blows my mind what we've done in just past the 20 years... massive jump forward compared to where we were. It's kinda like the difference between pre and post internet in Computer Science. Like the graph Dr. Frank always posts showing the differences between the old voltage standards over time... compare that to today... wow. The holy grail now is the quantum calibrator and from reading we're not that far off from it. The hard parts sounds like it a temperature thing but with graphene that may not be true for long.Bill

author: niner_007
author_rank: Frequent Contributor
timestamp: November 13, 2019, 06:38:25 am
content: it's going to be a real pickle after the Helium runs outback to the stone age?

author: SilverSolder
author_rank: Super Contributor
timestamp: November 13, 2019, 11:31:20 pm
content: Quote from: niner_007 on November 13, 2019, 06:38:25 amFusion?

author: CatalinaWOW
author_rank: Super Contributor
timestamp: November 14, 2019, 02:46:53 am
content: There are many, many thousands of tons of helium in the atmospheres of the outer planets. Science fiction has been infested with scoopships to harvest this for decades. Maybe this will convince some doubters that there is a point to developing space capabilities.

author: BradC
author_rank: Super Contributor
timestamp: November 14, 2019, 05:16:29 am
content: Quote from: CatalinaWOW on November 14, 2019, 02:46:53 am

author: CatalinaWOW
author_rank: Super Contributor
timestamp: November 14, 2019, 06:08:29 am
content: Nah, that's for removing CO2 from Earth's atmosphere.

author: Marck
author_rank: Regular Contributor
timestamp: November 14, 2019, 07:33:07 am
content: That model will never work. First of all she would have never gotten that big being a vegan. Plus she is wearing a dress so everyone in that part of the world can’t look up without being labeled a pervert. The one thing that it has gotten correct I suppose you could call that industrial grey a gender neutral colour.These interplanetary engineers need to dial up their emotional IQ if you ask me. SHAME SHAME SHAME.O and back to basics you would think they would at least get the geography correct and show that the earth is indeed flat.M

author: MegaVolt
author_rank: Frequent Contributor
timestamp: November 15, 2019, 08:55:20 am
content: Quote from: niner_007 on November 13, 2019, 06:38:25 amThis is not a problem.Any beta decay produces helium. Beta particle is helium. And it is constantly reproduced on the planet.Plus, we all hope for high-temperature superconductivity and then we will have enough liquid nitrogen. Or maybe if you’re very lucky then Peltier