Looking for a project for modern physics class

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Discussion Overview

The discussion revolves around selecting a project for a modern physics class that spans 12 weeks. Participants explore various topics within modern physics, including relativity, quantum mechanics, and particle physics, while considering the feasibility and requirements of their project.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant mentions interest in special/general relativity, nuclear physics, and cosmology, noting that the project does not need to prove anything experimentally.
  • Another participant suggests building a Michelson-Morley interferometer as a project idea.
  • Replicating Young's double slit experiment is proposed as a way to demonstrate wave function collapse, though concerns about the complexity and cost of creating a single-photon source are raised.
  • Using LEDs to determine Planck's constant is suggested as another potential project.
  • A participant expresses skepticism about the concept of wave function collapse and highlights the challenges of building a real experiment involving single-photon sources.
  • Ultimately, the group decides to build an interferometer to simulate the LIGO experiment, citing its relevance to general relativity and light interference.

Areas of Agreement / Disagreement

Participants express various ideas and concerns about project feasibility, with no clear consensus on a single approach until the decision to build an interferometer is made. Some participants remain critical of certain concepts, indicating ongoing debate.

Contextual Notes

The discussion includes considerations of project complexity, cost, and the necessity of experimental validation, which remain unresolved. Specific assumptions about the course expectations and project requirements are not fully articulated.

Who May Find This Useful

Students and educators interested in project ideas for modern physics courses, particularly those focused on relativity, quantum mechanics, and experimental physics.

egetunc
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For my modern physics course our group(3 people) need a project to build in 12 week,(so not short, 2-3hours work for each person per week) Our topics are:
  1. Relativity
  2. Waves and Particles I
  3. Waves and Particles II
  4. Bound States: Simple Cases
  5. Unbound States: Obstacles, Tunneling and Particle-Wave Propagation
  6. Quantum Mechanics in Three Dimensions and The Hydrogen Atom
  7. Spin and Atomic Physics
  8. Statistical Mechanics
  9. Particle and Nuclear Physics and Cosmology
So i need some ideas for a long term project. The duration includes everything(calculations, writing the reports and proposals etc.)
 
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What are your thoughts so far? What kind of a project would interest you and your other 2 partners?
 
Well, we tried to make a cloud chamber to observe muons and also some radioactive particles, but the instructor said that in previous years lots of people did it and don't do it. I'm curious about special/general relativity, nuclear physics and cosmology. Also the assistants emphasize that it's enough to build a project uses the physics laws in these topics. So we don't need to make an experiment to prove/reprove something.
 
How about replicating Young's double slit experiment. Show how detectors can collapse the wave function of electrons, photon, etc. Use one electron/photon at a time and see the wave being set off.

I don't exactly know if this is what your course expects of you. I would expect you would need to do significantly more, but here's an idea.
 
lekh2003 said:
How about replicating Young's double slit experiment. Show how detectors can collapse the wave function of electrons, photon, etc. Use one electron/photon at a time and see the wave being set off.

I don't exactly know if this is what your course expects of you. I would expect you would need to do significantly more, but here's an idea.
Well, hopefully you are a bit more critical vs. the idea of "wave-function collapse" than suggested here. It's problematic to use, to say the least.

If the project must be to build up a real experiment, it's not so simple to make single-photon sources. I don't know, how much such a setup would cost. The nowadays standard is to use a sufficiently laser and some appropriate crystal like a BBO crystal to use parametric down-conversion for creating (heralded) single-photon states. Then you also need some photodetector too.
 
egetunc said:
Well, we tried to make a cloud chamber to observe muons and also some radioactive particles, but the instructor said that in previous years lots of people did it and don't do it. I'm curious about special/general relativity, nuclear physics and cosmology. Also the assistants emphasize that it's enough to build a project uses the physics laws in these topics. So we don't need to make an experiment to prove/reprove something.

Use LEDs to find the value of Planck's constant.

http://www.scienceinschool.org/2014/issue28/planck

Zz.
 
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vanhees71 said:
Well, hopefully you are a bit more critical vs. the idea of "wave-function collapse" than suggested here. It's problematic to use, to say the least.

If the project must be to build up a real experiment, it's not so simple to make single-photon sources. I don't know, how much such a setup would cost. The nowadays standard is to use a sufficiently laser and some appropriate crystal like a BBO crystal to use parametric down-conversion for creating (heralded) single-photon states. Then you also need some photodetector too.
Yes, I never thought about the cost. These modern physics machines must be immensely expensive.

I am also wary of my usage of the wave function. I'll try to refrain.
 
  • #10
We decided to build an interferometer to simulate ligo experiment, it is a great idea since its background on general relativity, light interference, waves etc. Thus, related to our such topics. Thanks for all suggetions
 
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  • #11
Maybe you post about your result here in the forums :-)). In any case have fun with the physics!
 
  • #12
why not! after 12weeks we may share some videos and basic presentation
 
  • #13
egetunc said:
We decided to build an interferometer to simulate ligo experiment, it is a great idea since its background on general relativity, light interference, waves etc. Thus, related to our such topics. Thanks for all suggetions


(start at 3m45 for an interferometer... then go to 5m30s)
 

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