Top Tweets for #siredefinition
#ICYMI, Marina Gertsvolf, physicist and Time and Frequency team lead at #NRCMetrology, wrote an article this summer about her work on the redefinition of the second.
Find in on the blog: https://t.co/EmLXjtFyNl
#SIRedefinition #DaylightSavingTime
May 20 is #WorldMetrologyDay! To celebrate, Marina Gertsvolf, physicist and Time and Frequency team lead at #NRCMetrology, has written a blog post about her work on the redefinition of the second.
Read it here: https://t.co/OOzOdLPBVn
#DiscoverTheNRC #SIRedefinition
We think this chap needs to have a laser correction…
Planck constant is now defined as 6.626 070 15 × 10⁻³⁴ J s
#SIredefinition
What a Planck! 🤦♂️
#Humour #PhysicsJoke
In 2019 the #kilogram was redefined so it was no longer defined in terms of a physical artefact.
Watch 'Measuring Mass: The Last Artefact' on #BBCFour Wednesday 15th at 21:00 to find out why:
https://t.co/xiI9DJagBJ #SIRedefinition
The seven SI base units, which underpin our system of #measurement, are now each realized in terms of defined physical constants
This historic change occurred on 20 May 2019 #SIredefinition
#metrology #physics
And to get the background on each of these base SI units, look back with us at a relatively recent (and momentous) occasion in the history of science: https://t.co/PCKroHiiKs #SIredefinition
I'm writing my #JupyterCon2020 abstract this week, so I have not carved out time for the next animation. I'll get there. I'm planning for Cesium transition frequency next to continue the #SIRedefinition trend.
Day 22/100 with #100DaysofDH: building more svg animations from my @nist #SIRedefinition card. Now its Boltzmann's constant that defines the Kelvin (our measure of temperature)
Join us Thurs @ 11 am(ET) for this week’s #NRCMetrology seminar. Richard Davis, emeritus physicist @BipmMedia, will discuss the history of the kilogram and the role of analytical chemistry in its recent redefinition. #SIRedefinition #metrology #chemtwitter https://t.co/iP5C9Vw7xD
Join us Thurs @ 11 am(ET) for this week’s #NRCMetrology seminar. Richard Davis, emeritus physicist @BipmMedia, will discuss the history of the kilogram and the role of analytical chemistry in its recent redefinition. #SIRedefinition #metrology #chemtwitter https://t.co/7qVpbzQTX6
Check out our report on how memristive devices can be exploited for quantum metrology! #SIredefinition #memristors
https://t.co/4WAbZ8kIYp
@NamesPolito
[#JeudiPhoto] La balance du watt du LNE a contribué à la redéfinition du kilogramme. En effet, depuis 2019, le kilogramme n’est plus défini par un objet physique, mais par une constante. Pour en savoir plus : https://t.co/8f9VoxdwdY
Crédit photo: P.Stroppa
#SIRedefinition
![LNE_fr's tweet photo. [#JeudiPhoto] La balance du watt du LNE a contribué à la redéfinition du kilogramme. En effet, depuis 2019, le kilogramme n’est plus défini par un objet physique, mais par une constante. Pour en savoir plus : https://t.co/8f9VoxdwdY
Crédit photo: P.Stroppa
#SIRedefinition https://t.co/hx7UU8sL7t](https://pbs.twimg.com/media/EP_9mW4WoAEOkA6.jpg)
Measuring the world around us recently got more constant, thanks to the #SIredefinition last May. Bookmark this reference with all the up-to-date definitions: https://t.co/PSDYSGHYhy
Fantastic talk about #SIredefinition! After the physics colloquium, students (and professors) gathered around Dr Michael de Podesta @NPL to see Avogadro sphere (kilogram standard) and triple-point cell (temperature standard) @KCL_Physics @KingsNMS @Protons4B
The correct answer is silicon! Read about this metalloid’s part in the #SIredefinition of the mole: https://t.co/2wM22rz2HO
Održan XIII Kongres metrologa
U periodu od 23. do 25. oktobra, u Šapcu, u organizaciji FTN Univerziteta u Novom Sadu, Direkcije za mere i dragocene metale i Društva metrologa Srbije, održan je XIII Kongres metrologa. Više na: https://t.co/0vpnh5SB4x
#siredefinition
Happy #MoleDay2019 everyone!
Did you know that this year the #mole was redefined by the #measurement community? #SIredefinition
https://t.co/QvSW0JdFgR
How do we measure stuff? Not by looking around and saying “whoa, we have too much stuff”. It’s by the mole which measures how many atoms or molecules you have in substance. This is our last video to help kids learn about measurement. Thanks for tuning in! #SevenBasicUnits
There’s a mole in our operations with worldwide influence. Discover the mole in its newest form since the #SIredefinition last May: https://t.co/lycjTTDdYg #MoleDay
Oct. 6-12 is Metric Week! Check in with us all week as we highlight each of the seven base units in the modern metric system and pay homage to last May’s #SIredefinition.
Hear from NIST measurement scientist extraordinaire Jon Pratt with @BiPiSci on the #SIredefinition and its impact!
After 130 years, the hunk of French metal defining the kilogram will be replaced by a fundamental constant. We discuss this weighty subject and whether we lose other fundamentals as we measure with increasing precision.
https://t.co/9XtIyrNyfL
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