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Quarks | Standard Model Of Particle Physics

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Uploaded by on Nov 10, 2009

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The Standard Model of Particle Physics (Chapter 3): Up and Down Quarks

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STANDARD MODEL OF PARTICLE PHYSICS:
http://www.youtube.com/user/Best0fScience#g/c/4A8C50311C9F7369

1) First Second Of The Universe:
http://www.youtube.com/watch?v=4HXPYO5YFG0
2) Force And Matter:
http://www.youtube.com/watch?v=p5QXZ0__8VU
3) Quarks:
http://www.youtube.com/watch?v=PxQwkdu9WbE
4) Gluons:
http://www.youtube.com/watch?v=ZYPem05vpS4
5) Electrons, Protons And Neutrons:
http://www.youtube.com/watch?v=Vi91qyjuknM
6) Photons, Gravitons & Weak Bosons:
http://www.youtube.com/watch?v=JHVC6F8SOFc
7) Neutrinos:
http://www.youtube.com/watch?v=m7QAaH0oFNg
8) The Higgs Boson / The Higgs Mechanism:
http://www.youtube.com/watch?v=1_HrQVhgbeo

The Standard Model of particle physics is a theory of three of the four known fundamental interactions and the elementary particles that take part in these interactions. These particles make up all visible matter in the universe.

Every high energy physics experiment carried out since the mid-20th century has eventually yielded findings consistent with the Standard Model.

Still, the Standard Model falls short of being a complete theory of fundamental interactions because it does not include gravitation, dark matter, or dark energy. It is not quite a complete description of leptons either, because it does not describe nonzero neutrino masses, although simple natural extensions do.

http://en.wikipedia.org/wiki/Standard_Model

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UP QUARKS

The particle itself is a fundamental particle and is too small to be seen by any imaginable instrument of observation. So we instead represent the properties that allow the up quark to interact.

The central small dot represents the weak charge of the up quark. This charge entirely separate from electric charge gives rise to the Weak Nuclear Force. This force causes up quarks and down quarks to swap flavours and its typical range is much smaller than the diameter of a proton.

Surrounding that is a volume depicted as gold for the up quark. This represents the electric charge of the up quark, which has a positive charge of +2/3 units The electric charge is the generator of the Electromagnetic Force which has infinite range although the drop off in strength is pretty dramatic as we move away from the quark.

The larger volume of shifting red, green, and blue is meant to represent the color charge which generates the Strong Nuclear Force. This is the force that holds quarks together in a proton or neutron. And a residuum of this force holds the protons and neutrons together in the nucleus of atoms. This force is a hundred times stronger than the Electromagnetic force, but its range is limited to about the size of a proton.

DOWN QUARKS

The particle itself is a fundamental particle and is too small to be seen by any imaginable instrument of observation. So we instead represent the properties that allow the down quark to interact.

The central small dot represents the weak charge of the down quark. This charge entirely separate from electric charge gives rise to the Weak Nuclear Force. This force causes the down quark to change into an up quark, and its typical range is much smaller than the diameter of a proton.

Surrounding that is a volume depicted as purple for the down quark. This represents the electric charge of the down quark, which has a negative charge of -1/3 units The electric charge is the generator of the Electromagnetic Force which has infinite range although the drop off in strength is pretty dramatic as we move away from the quark.

The larger volume of shifting red, green, and blue is meant to represent the color charge which generates the Strong Nuclear Force. This is the force that holds quarks together in a proton or neutron. And a residuum of this force holds the protons and neutrons together in the nucleus of atoms. This force is a hundred times stronger than the Electromagnetic force, but its range is limited to about the size of a proton.

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The Cassiopeia Project - making science simple!

The Cassiopeia Project is an effort to make high quality science videos available to everyone. If you can visualize it, then understanding is not far behind.

http://www.cassiopeiaproject.com
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Top Comments

  • They should make a Quarks cereal with the quarks represented by marshmallows.

  • physics is amazing. I wish i had a better brain to understand it.

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All Comments (120)

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  • @AurumenK God is not proven moron ...

  • trippy 

  • @abdul0333 Mee too

  • @qsucvatz haha ironic because all physics dealt with at a given time by professionals hasn't been fully confirmed (which is why they have jobs) thus fitting into your definition of faith. Atoms are barely measurable, quarks are immeasurable, and to think they consists of 1 dimensional strings that hold a crutch for our understanding of the cosmos is exactly what i call faith, for now. Theoretical physics can then be defined as faith in mathematics.

  • Q. What did the 2 hydrogen atoms say to the oxygen atom?

    A: Water you doing here?!

  • @Geo877 Thanks mate it will help me alot

  • @abdul0333 brightstorm (dot) com/science/physics/the-atom-a­nd-quantum-physics/quantum-phy­sics Check out this guy! Best physics teacher I've come across! And look up khan academy :)

  • @abdul0333 You just need a better teacher.

  • oh i totally get it now

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