25 new facts we learned from Admir Greljo about Particle Physics
We have such intelligent and ambitious people all over the globe and we are proud of their success. One of them is definitely Dr. Admir Greljo, and it is fair to say that he is currently considered by many as one of the most intelligent people from Bosnia and Herzegovina.
And guess what? We partnered up with Asocijacija za napredak nauke i tehnologije (ANNT) and created a special webinar last Wednesday. Admir talked about about Particle Physics at CERN's Large Hadron Collider (LHC).
The LHC is the world’s largest and most powerful particle accelerator and the world’s largest machine. It is the result of a collaboration with over 10,000 scientists and hundreds of universities and laboratories, as well as more than 100 countries. It lies in a tunnel 27 kilometres in circumference and as deep as 175 metres beneath the France–Switzerland border near Geneva.
Dr. Admir Greljo is a researcher at the forefront of theoretical particle physics. Currently a fellow at CERN, the European Organization for Nuclear Research.
We were truy amazed by the amount of new knowledge we received in just 90 minutes of this wonderful online lecture. We picked 25 most interesting facts for you, but there is a lot more. See the entire webinar below for more. Enjoy!
The distance between the Moon and the Earth is one light second
Alpha Centauri star system is a 5-light year away from the Earth
Orion Arm composed of a large number of stars is visible at 10 to the power of 20 meters
Our galaxy known as “Milky Way” is visible at 10 to the power of 21 meters or 100 thousand light-years across
The Milky Way has approximately 100 billion stars in it
Andromeda is the closest neighbour of our galaxy
The galactic collision between Andromeda and Milky Way is predicted to occur in about 4.5 billion years
The Cosmic Horizon represents the maximum distance from which light could have travelled to the observer in the age of the universe
The Universe is homogeneous and isotropic in space and time
The Cosmic Horizon contains 100 billion galaxies
Current cosmological model is described by Lambda Cold Dark Matter (Lambda-CDM)
Hubble’s law proved experimentally that galaxies are moving away from the Earth at velocities proportional to their distance
The energy budget of the Universe consists of dark energy, dark matter, normal matter, and 0.005% radiation
Modern physics knows only 5% of the energy budget in the Universe
10 to the power of -10 is the size of an atom, whereas the atomic nucleus (protons + neutrons) is visible at 10 to the power -12
Quarks were discovered in the 20th century
We call structures at 10 to the power of -16/-17/-18 physics of elementary particles
Many phenomes could be discovered on different measuring scales
In CERN, the experiments are made using the Large Hadron Collider (LHC) which is the most powerful particle accelerator ever built
As a particle accelerator, LHC pushes protons to near the speed of light and observe potential anomalies that could happen after the collision between them
In 2012, the Higgs boson was discovered. It is an elementary particle that helped in completing the Standard Model of particle physics
The Standard Model of particle physics is the theory describing three of the four known fundamental forces in the universe
The first generation of elementary particles represents leptons (electron and neutrino) and up/down quarks
The second and third generation of elementary particles consists of charm, strange, mion, mion-neutrino, top, bottom, tau, and tau-neutrino
All protons in the world are identical.
You can watch the entire webinar below, in case you missed it.