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CERN Profile picture
@CERN
Mar 25, 2020 • 21 tweets • 12 min read • Read on X
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Find out which particle best fits your personality, learn about the properties of elementary particles & share your result below: cern.ch/identities

In light of #COVID19 keep your spacetime distance - be a #fermion 😏 Image
To educators: read more about this activity and how to use it with your students on the #CERN #SCoolLAB website scoollab.web.cern.ch/particle-ident… Image
#Bubblechambers are able to produce fascinating visualisations of particle tracks, but are no longer used @CERN. Therefore, why not get creative & share your homemade #bubblechamber #kitchenart ImageImage
Advanced: What’s the electric charge of the carrot? The spaghetti beam enters from the left & the magnetic field points out of the plate 🧐 Image
✂️ To educators: read more about bubble chambers and how to identify particle tracks with your students on the #CERN #SCoolLAB website: scoollab.web.cern.ch/bubble-chamber…
💥 Did you know that quarks love #confinement? Out of proton collisions in the LHC, showers of new quark particle systems (jets) are created.
🧩 To educators: play with quark #puzzle pieces and learn more about the rules that govern these particle systems on the CERN #SCoolLAB website: scoollab.web.cern.ch/quark-puzzle Image
😔 Bored at home?
😁 Why not play a particle physics board game today?
🎲 To educators: read more about this activity and how to use it with your students on the CERN #SCoolLAB website: scoollab.web.cern.ch/particle-physi… Particle builder is a parti...
🏌️‍♀️ Tee it up, it’s your turn to play!
Scattering experiments are at the ♥ of particle physics.
In the video below, which scattering object is used first: ● or ⬥?
🔬 To educators: read more about scattering experiments and how to use them with your students on the CERN #SCoolLAB website: scoollab.web.cern.ch/scattering-exp… Image
And if you want to understand what happens during a particle collision and how physicists analyse the pattern of scattered particles, you should watch the latest episode of the "Higgs Boson's Discovery Explained":
Yes, the answer was ●, the salad bowl!
Golf players: did @jeff_active has a proper stance for putting? 🤔 Picture by Julia Woithe, CERN
Today, it’s your turn to solve some knotty physics with leftover 🧻 cardboard tubes. #ToiletPaperChallenge
🤔 Did you guess how are the strings connected inside the tube in the video above? (answer will be given later today)
✂️ To educators: you can find a lesson plan for the mystery tube activity @Perimeter institute. resources.perimeterinstitute.ca/products/the-b…
📦Or, if you prefer 3D-printable mystery boxes, you can find more information on the CERN #SCoolLAB website scoollab.web.cern.ch/3d-printable-m… Image
Yes, the correct answer is A! Image
Annoyed by the 🌞 while you are stuck inside? Today, it’s your turn to make a ☁️ in your kitchen.
💨 To educators: you can find more information on the CERN #SCoolLAB website: scoollab.web.cern.ch/states-of-matt… Image
Did you know that the CLOUD experiment studies cloud formation at CERN?

Find out more: home.cern/science/experi… Image

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More from @CERN

CERN Profile picture
Oct 1
“Places like CERN give us hope for a better world. Places like CERN show what humanity can achieve when we set aside our disputes and focus on the common good.”

« Des institutions comme le CERN donnent l'espoir d'un monde meilleur, et montrent ce que l'humanité peut accomplir lorsqu’elle met ses différends de côté et agit pour le bien commun. »

— CERN Director-General Dr Fabiola Gianotti
La Directrice générale du CERN Madame Fabiola Gianotti

#CERN70Image
Earlier today, I had the privilege of visiting CERN’s Large Hadron Collider. Walking through those halls, I was awestruck by the scale of the groundbreaking experiments happening here. Meeting the Belgian scientists involved in this remarkable work was truly inspiring. Belgium is proud to support CERN and I reaffirm our commitment to this exceptional European collaborative research project. Here’s to 70 years of discovery and to many more years of adventure driven by the CERN community’s human curiosity.

— Her Royal Highness Princess Astrid of Belgium
Son Altesse Royale la Princesse Astrid de Belgique

#CERN70Image
No European country alone could have built the world’s largest particle collider. CERN has become a global hub because it rallied Europe and this is even more crucial today. I am proud that we have financed the feasibility study for CERN’s Future Circular Collider (FCC). This could preserve Europe's scientific edge and could push the boundaries of human knowledge even further. And as the global science race is on, I want Europe to switch gears. To do so, European unity is our greatest asset.

— President of the European Commission Her Excellency Dr Ursula von der Leyen
La Présidente de la Commission européenne Son Excellence Madame Ursula von der Leyen

#CERN70Image
Read 10 tweets
CERN Profile picture
Aug 8, 2022
#OnThisDay in 1902, the theoretical physicist Paul Dirac was born.

As we #FollowTheProtons to CERN’s #Antimatter Factory, what better way to start than by celebrating the work of this young physicist and his @NobelPrize-winning equation?
@NobelPrize In 1928, Dirac wrote an equation to describe the behaviour of an electron moving at a relativistic speed. It could have two solutions: one for an electron with positive energy, and one for an electron with negative energy.
@NobelPrize This equation, in some way, predicted for the first time the existence of an anti-world identical to ours, but made out of antimatter.

What would you ask him about antimatter if you could meet him? 🎂
Read 4 tweets
CERN Profile picture
Jul 14, 2022
On 13 July, CELESTA was launched into #space aboard #VegaC.

Here are the quick facts:
🛰️ It is the first CERN-driven satellite
🤖 It will study radiation's effects on electronics
🤝🏽 It is a collaboration with @umontpellier

🎥 @esa
@Arianespace @CNES @esa_sts
@umontpellier @esa @Arianespace @CNES @esa_sts #CELESTA was tested entirely at the CHARM facility.

Protecting satellites against radiation is a challenging and costly task. Some of CERN’s facilities are able to reproduce the environment of Earth’s orbit at a low cost, and help with radiation testing: kt.cern/aerospace/faci…
To study the effect of space radiation on electronics, CERN has developed a radiation monitoring device, Space RadMon, taken into space with the #CELESTA microsatellite aboard #VegaC.

Lightweight and low-power, it is ideal for future space missions: kt.cern/aerospace/radi…
Read 4 tweets
CERN Profile picture
Jul 13, 2022
The first collisions of #LHCRun3 🤩

In this #PhotoOfTheWeek, take a look at the first high-energy collisions recorded by the LHC's @ATLASexperiment, @CMSExperiment, @ALICEexperiment and @LHCbExperiment, as well as other experiments, such as @FASERexperiment and SND. 👇
A Toroidal LHC Apparatus (ATLAS) @ATLASexperiment

Display of a collision event recorded by ATLAS on 5 July 2022, when stable beams of protons at the energy of 6.8 TeV were delivered to ATLAS for the start of #LHCRun3.

(1/6) Image
Compact Muon Solenoid (CMS) @CMSExperiment

Display of a collision event recorded by CMS on 5 July 2022, when the collisions at the record energy of 13.6 trillion-electronvolts (TeV) were first recorded by the #LHC experiments. #LHCRun3

(2/6) Image
Read 5 tweets
CERN Profile picture
Mar 30, 2022
Today’s #PhotoOfTheWeek is all about the @LHCbExperiment. We are almost ready for #restartingLHC, so here are some of the tasks involved in the upgrade of the LHCb experiment. 💪
@LHCbExperiment ✅ Upgrade of the VErtex LOcator, a detector used to determine the exact point where the particles collide. One of its sensors is just 5mm away from the beam. Brand new modules were installed, with 40 million active pixels.
@LHCbExperiment ✅ New mirrors for the ring-imaging Cherenkov (RICH) detectors: this system consists of two huge digital cameras that measure the speed of particles. The lens system of the cameras is made of about 200 flat and spherical mirrors immersed in special gases.
Read 6 tweets
CERN Profile picture
Jun 21, 2021
“I would like to express my deepest gratitude to the many partners in our Member and Associate Member States and beyond who are making the #CERNScienceGateway possible, in particular to our generous donors.”
Fabiola Gianotti, CERN Director-General Image
🔴 Follow the webcast of the first stone ceremony of the #CERNScienceGateway: webcast.web.cern.ch/event/i1046896
“We will do our best, not only in the construction & operation of the #CERNScienceGateway but also more widely to ensure that science maintains a place of integrity and trustworthiness, of international collaboration aiming for peace”
Ursula Bassler, President of the CERN Council
Read 6 tweets

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