Modern Physics in International Teaching A brief overview of the treatment of twentieth century...
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![Page 1: Modern Physics in International Teaching A brief overview of the treatment of twentieth century physics in the International Baccalaureate.](https://reader035.fdocuments.net/reader035/viewer/2022062412/5a4d1ace7f8b9ab05997071b/html5/thumbnails/1.jpg)
Modern Physics in International TeachingA brief overview of the treatment of twentieth century physics in the International Baccalaureate
![Page 2: Modern Physics in International Teaching A brief overview of the treatment of twentieth century physics in the International Baccalaureate.](https://reader035.fdocuments.net/reader035/viewer/2022062412/5a4d1ace7f8b9ab05997071b/html5/thumbnails/2.jpg)
Guess the experiment
The team
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Where are we?
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Any connections?
Nick Holonyak 1962
Sandor Just 1904
Max Planck 1894
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IB Pedagogy Learner profile(inquirer, communicator, open-minded, refective, risk-taker) Syllabus linked to “Theory of Knowledge”Eg “students should be familiar with the direct and indirect effects of ionising radiation on structures within cells. TOK: Correlation and cause, risk assessment” Syllabus linked to aims such asRaise awareness of moral social ethical implications of using scienceEg “Discuss the economic and ethical implications of high-energy particle physics research.”
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IB Sciences 21% assessed experimentation(designing, analysing data, evaluating) 3% inter-disciplinary team project Physics: choose 2 special options(eg Astrophysics, Communications, Electromagnetic waves, Relativity, Medical physics, Particle physics) Possibility of “extended essay” project
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Group 4 Project
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Recent UK influences… Structured lessons(objective, starter, middle, plenary) Active Learning Assessment for Learning (formative
feedback) Lesson observation: graded! “How Science works” for all studentsEg applications of science, designing experiments, evaluating evidence, communicating scientifically…
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Modern Physics in IB Atomic and nuclear structure Quantum world and particle physics Astrophysics Digital technology Energy resources and Climate Change Medical physics Relativity
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Atomic and Nuclear Brownian motion, Rutherford gold foil
description only Ionising radiation experiments, cloud
chamber Half life of protactinium Uses and dangers of radioactivity Atomic spectra: emission tubes Nuclear mass defects, fission, fusion
Two atoms were walking across a road when one of them said, "I think I lost an electron!" "Really!" the other replied, "Are you sure?" "Yes, I 'm absolutely positive.“
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Quantum world Photoelectric effect Atomic energy levels: electrons as
standing waves Interpretation of wave function Heisenberg uncertainty
This is apparently a true story. It took place just outside of Munich, Germany.Heisenberg went for a drive and got stopped by a traffic cop. The cop asked, "Do you know how fast you were going?" Heisenberg replied, "No, but I know where I am."
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Particle Physics Descriptions of elementary particles,
fundamental interactions, exchange particles, Feynman diagram rules
Particle accelerator design, particle detectors
Standard model and conservation laws Asymptotic freedom, neutral current
A neutron walked into a bar and asked, "How much for a drink?" The bartender replied, "For you, no charge.“
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Astrophysics Stellar spectra, Stefan-Boltzmann and Wien Laws,
classification of stars Hertzsprung-Russell Diagram Distances: Parallax, spectroscopic parallax, Cepheid
variables Cosmology: Olbers paradox, Big Bang evidence,
Hubble’s Law, dark matter problem Stellar evolution: neutron star and black hole limits
Q: What is the simplest way to observe the optical Doppler effect?
A: Go out at and look at cars. The lights of the ones approaching you are white, while the lights of the ones moving away from you are red.
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Digital Technology Binary data Operation of CD Operation and uses of CCD Sampling
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Energy Resources and Climate Change Fossil fuels: energy densities,
efficiencies, sankey diagrams Non-fossil: nuclear, hydro, solar, wind –
various simple calculations Greenhouse effect: black bodies,
emissivity, absorption spectra Global Warming: evidence, possible
consequences (simple calcs), solutions
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Medical Physics Hearing: decibel scale, frequency
response, defects Imaging: x-ray, attenuation, ultrasound,
impedance, MRI, CT scanning Use of radiation: dose, risk, diagnostic,
therapy
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Relativity Inertial frames of reference, simultaneity Lorentz factor, Time dilation, twins paradox Evidence: Michelson-Morley, muon decay Momentum and energy: formulae General relativity: equivalence principle,
gravitational red shift, black holes (Schw.radius)
Evidence for General RelativityQ: Where does bad light end up? A: In a prism.
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What experiments can I do about….. Quantum?
LEDs of a variety of colurs
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Experiments in astro?
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I’ve got a question…. Y9 (14 yrs old): So these electron thingys, just how small are they then? Y11 (16yrs old)You’re telling me the universe is expanding? So am I expanding too? Y13 (18 yrs old)OK, OK, so sometimes its a wave sometimes its a particle. Just tell me which one it is really.