phys1441-spring08-011408-post

phys1441-spring08-011408-post - PHYS 1441 Section 002...

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Monday, Jan. 14, 2008 PHYS 1441-002, Spring 2008 Dr. Jaehoon Yu 1 PHYS 1441 – Section 002 Lecture #1 Monday, Jan. 14, 2008 Dr. Jae hoon Yu Today’s homework is homework #1, due 9pm, Monday, Jan. 21!! Who am I? How is this class organized? What is Physics? What do we want from this class? Brief history of physics Standards and units Dimensional Analysis
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Monday, Jan. 14, 2008 PHYS 1441-002, Spring 2008 Dr. Jaehoon Yu 2 Announcements • Reading assignment #1: Read and follow through all sections in appendices C, D and E by Tuesday, Jan. 22 – There will be a quiz on Wednesday, Jan. 23, on this reading assignment • Reading assignment #2: Read CH1.1 – 1.4 by this Wednesday, Jan. 16 • No class next Monday, Jan. 21, Martin Luther King day – But homework#1 is still due 9pm that day
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Monday, Jan. 14, 2008 PHYS 1441-002, Spring 2008 Dr. Jaehoon Yu 3 Who am I? •N a m e : D r . Jae hoon Yu (You can call me Dr. Yu ) Office: Rm 342, Chemistry and Physics Building Extension: x22814, E-mail: jaehoonyu@uta.edu My profession:High Energy Physics (HEP) – Collide particles (protons on anti-protons or electrons on anti-electrons, positrons) at the energies equivalent to 10,000 Trillion degrees – To understand • Fundamental constituents of matter • Interactions or forces between the constituents • Origin of Mass • Creation of Universe (The Big Bang Theory) – A pure scientific research activity • Direct use of the fundamental laws we find may take longer than we want but • Indirect product of research contribute to every day lives; eg. WWW
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Monday, Jan. 14, 2008 PHYS 1441-002, Spring 2008 Dr. Jaehoon Yu 4 High Energy Physics Structure of Matter 10 -10 m 10 -14 m 10 -15 m <10 -18 m 10 -9 m Matter Molecule Atom Nucleus u Quark <10 -19 m protons, neutrons, mesons, etc. π,Ω,Λ. .. top, bottom, charm, strange, up, down Condensed matter/Nano-Science/Chemistry Atomic Physics Nuclear Physics Baryon (Hadron) Electron (Lepton) 10 -2 m
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Monday, Jan. 14, 2008 PHYS 1441-002, Spring 2008 Dr. Jaehoon Yu 5 The Particle Physics Standard Model • Assumes the following fundamental structure: • Three families of leptons and quarks together with 12 force mediators Î Simple and elegant!!! ~0.1m p Family Discovered in 1995, ~170m p Directly observed in 2000
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Monday, Jan. 14, 2008 PHYS 1441-002, Spring 2008 Dr. Jaehoon Yu 6 Accelerators are Powerful Microscopes. They make high energy particle beams that allow us to see small things.
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phys1441-spring08-011408-post - PHYS 1441 Section 002...

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