101.F07.lecture1

101.F07.lecture1 - Welcome to PHY101 How...

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Unformatted text preview: Welcome to PHY101: How the "world" works I Paul Chaikin What is physics? It's knowledge of nature. What is nature? It's matter and it's energy. They are indeed related. How does one "piece" of matter interact with another "piece" matter in terms of a few fundamental laws? The matter in our universe Robert Kirschner The matter in our universe http://home.slac.stanford.edu/pressreleases/images/darkmatter2.jpg What are atoms? Atoms are made up of electrons, protons and neutrons? wikipedia.org But what are atoms made up of?.......Oh boy! The standard model http://www-d0.fnal.gov/Run2Physics/WWW/results/final/NP/N04C When matter interacts I http://www.particle.kth.se/ fmi/kurs/PhysicsSimulation/Images/6b/fysikb1.jpg When matter interacts II http://www.ics.uci.edu/ eppstein/pix/nats/cubs/ Other reasons to study physics Countless devices like your cell phone use physics Critical thinking skills http://www.markstivers.com/cartoons/Stivers Solve problems......creatively Solve problems......creatively What does it take to learn physics? Mathematics Algebra: What is the volume of a sphere with a radius of 1 cm? Answer: V = 4 r3 , or 4 cm3 . 3 3 Vectors: Addition, subtraction, dot product, cross product Graphs: What does it take to learn physics? Mathematics Algebra: What is the volume of a sphere with a radius of 1 cm? Answer: V = 4 r3 , or 4 cm2 . 3 3 Vectors: Addition, subtraction, dot product, cross product Graphs: Numbers in physics Significant figures Units! Units! Units! Measurements have error bars--1.0 0.1 cm Scientific notation Back of the envelope calculations Problem 1.75 Make an order-of-magnitude estimate of the volume of water in the oceans. Do not look up any data in books. Welcome to PHY101: How the "world" works I Paul Chaikin ...
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This note was uploaded on 05/18/2008 for the course PHY 101 taught by Professor Schwarz during the Fall '08 term at Syracuse.

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101.F07.lecture1 - Welcome to PHY101 How...

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