Jānis Šmits

[Marco Reps @MarcoReps]

Happy World #MetrologyDay 🥳Here's a sub-ppm 20kA direct current comparator by Measurements International in the 90s based on a design by Kusters from the 60s. Single primary winding, matched cable lengths for uniform magnetic field, new readout electronics developed at CERN

[Victor Marcel Acosta @acosta_physics]

Phase noise is well known in spectroscopy and quantum control (eg https://t.co/jsdkFZ6E2t). It hasn't drawn much attention in the NV community, but it is a key hurdle in reaching femtotesla sensitivity. We hope our study is useful for ppl developing NV sensors or other MW qubits.

[Victor Marcel Acosta @acosta_physics]

New paper led by Dr. Andris Berzins and Maziar Saleh Ziabari:
-the impact of MW phase noise on NV sensors is important! picotesla-level noise.
-accurately predicted with filter function + generator spec sheet.
-with gradiometry, we realize >10x suppression
https://t.co/i3rF6K3OQS

[Victor Marcel Acosta @acosta_physics]

Here is the published version:
https://t.co/hDFduMKHMg

[Victor Marcel Acosta @acosta_physics]

Interested in precision measurements with NV centers or unconventional NMR?
Check out our preprint, led by grad student Yaser Silani:

-Sensitivity of 70 fT after 1 second for kHz-MHz fields.

-Remote Nuclear Quadrupole Resonance spectroscopy of powders.
https://t.co/OPofqVopfw

[Simon Ostrovsky @SimonOstrovsky]

I often hear of outdated Russian rockets missing their targets but from what I saw in Mykolaiv, not only is Russia getting accurate coordinates for secret bases and supply dumps but they are hitting their marks. Mykolaiv region was hit with 129 missiles in two weeks. It’s scary.

[Physical Review Research @PhysRevResearch]

Proposal for the search for new spin interactions at the micrometer scale using diamond quantum sensors, P.-H. Chu, N. Ristoff, J. Smits, N. Jackson, Y. J. Kim, I. Savukov, and V. M. Acosta @cynical_panda @acosta_physics #atomicphysics #quantum https://t.co/DzIBUPeBhy

[Victor Marcel Acosta @acosta_physics]

New preprint: Do electron spins couple to the velocity of moving masses?

Sounds crazy, but not forbidden, and our team from New Mexico (led by Los Alamos scientist Pinghan Chu, grad student Nate Ristoff and postdoc @Cynical_Panda) would like to find out!
https://t.co/iSC6VwP55y

[Global NMR Discussion Meetings @global_nmr]

Tuesday, November 23, Prof. Ilya Kuprov @Ilya_Kuprov will present "What goes on inside the nucleus: origins of nuclear magnetic and quadrupole moments"

11am Boston/5 pm Paris/9:30pm Delhi

Same Zoom link as last time, DM if you need it!
#NMR #NMRchat

[Victor Marcel Acosta @acosta_physics]

Demonstration of diamond nuclear spin gyroscope https://t.co/0sse3TTPs5

[Global NMR Discussion Meetings @global_nmr]

Video recording of Tuesday's excellent talk by Prof. Mark Conradi titled "NMR Hardware" is now available on YT! #NMR #NMRChat

https://t.co/GfWqpwPrEF

[Global NMR Discussion Meetings @global_nmr]

Join us Tuesday, September 14 to hear Prof. Mark Conradi give a tutorial titled "NMR Hardware"

8 am California/ 11 am Boston/ 5pm Paris/ 8:30pm Delhi

Same Zoom link as last time
#NMR #NMRChat

[Victor Marcel Acosta @acosta_physics]

Shot in the dark: does anyone know where I can buy pole caps for an old Varian V-4005 electromagnet?

They have internal threads that are approximately 3.5 inch diameter, maybe 24 threads per inch (perhaps M85 x 1)

[Ursula von der Leyen @vonderleyen]

Esam saņēmuši 🇱🇻 Latvijas ekonomikas atveseļošanas plānu.

#RRF finansējums plānam piešķirts saskaņā ar 6 prioritātēm: zaļā un digitālā transformācija, veselības aprūpe, vienlīdzība, ekonomikas pārveide un tiesiskums.

Mērķis #NextGenerationEU līdzekļus sākt izmantot šovasar.

[Ben Bartlett @bencbartlett]

Incoherent light sources (like a lightbulb) can actually be coherent at very small timescales!
‣ 10⁻¹⁶s: the EM waves can be seen
‣ 10⁻¹⁴s: interference patterns visible
‣ 10⁻⁶s: light source seems incoherent

[Ivars Ijabs @ijabs]

Everyone with a conscience, who believes in democracy should be outraged & demand #FreeNavalny immediately.

[Jānis Šmits @Cynical_Panda]

@spigana Es biju ar tevi līdz zirņiem, tagad esmu pret tevi.

[Jānis Šmits @Cynical_Panda]

@kasparszellis https://t.co/gKmfcLfwWl

[Jānis Šmits @Cynical_Panda]

The main drawback of teaching remotely is the lack of student interaction. The second is when you forget to adjust the recording quality settings and need to find the 12 or so pages that were part of the recorded lecture to scan and upload them in higher definition...

[Jānis Šmits @Cynical_Panda]

@phronemophobe Piesaista, bet nečeko ļoti uzmanīgi. Centies izskatīties pēc manis.