Intermediate Experimental Methods
Class Discussion Page on Piazza
Public chats via Mastodon
Syllabus
|
Week |
Reading Schedule |
Hands-on Grapplings |
Homework Exercises | Modeling Exercises | Links | ||||||
| 1 |
|
Before class, respond to Piazza Poll @9
Then, in class, equalize the number of team members on Team LabVIEW, Team Electrical, and Team Mechanical The TA may be able to help you to identify hardware appropriate to your team. Write down any specs that might be important Leveraging the power of outlining software, work with your team to plan your next steps, and to schedule your full time commitment for the week. The IWU Catalog states that, "Ideally, all courses will make approximately the same total demands upon a student’s time: ten to twelve hours per week per course (including scheduled class meeting time needed to complete all assignments)" Write up your (detailed) plans for the week, including your work schedule. (Is time for reading and writing in your schedule? It is a critical habit of mind and work to write before doing.) |
Write a paragraph highlighting what you've learned from your readings, or the video at right, about PID Control
Regardless of what Team you start out on, keep taking steps in your LabVIEW development! Open a blank VI, right-click on the wiring diagram, and search the term PID. Take notes on what you find. |
Engage in modeling appropriate to your Team: What is it that you need to understand? Implementing PID control for this particular application involves consideration of thermal measurement, heat sinking, and thermal "mass" (i.e., the system inertia associated with RC time constants) Can you find materials to help? Your lab notebook must reflect any progress made! |
|||||||
|
2 |
|
Integrate (at least a basic working version of) your Team's components and Take test data, and fit it to a basic physical model Try to complete your work before Thursday's class |
Finalize a written guide, to be utilized by non-team members, using the collaborative writing software Overleaf: once one team member opens a template, they'll only have to click the button in the upper right corner, to “SHARE” the manuscript …just be sure to grant editing privileges to your team members (and TA and instructor) Your work and guide should be in polished form by Jan 19 Don't forget to keep taking steps in your LabVIEW development! |
Send us your annotated bibliography (described at right) Over the weekend, read my Intro to PCB Design, which uses KiCAD, an ad hoc conglomeration of disparate tools Our work should migrate to FLUX, which is a single, coherent tool for collaborative work: create your account at https://www.flux.ai/signup, then work through a tutorial |
Search for at least 10 articles in Am. J. Phys. relevant your team's, Zotero can nicely manage citations for Overleaf |
||||||
|
3 |
|
Appreciate the time required outside of our listed class time: The IWU Catalog states that, "Ideally, all courses will make approximately the same total demands upon a student’s time: ten to twelve hours per week per course (including scheduled class meeting time needed to complete all assignments)" Please post entries, including detailed modeling, to your OneNote |
Pre-lab for Tues: Write in your OneNote Pre-lab for Thus: Integrate elements of your reading |
Send us your annotated bibliography Over the weekend, read my Intro to PCB Design, which uses KiCAD, an ad hoc conglomeration of disparate tools Our work should migrate to FLUX, which is a single, coherent tool for collaborative work: create your account at https://www.flux.ai/signup, then work through a tutorial |
"System near an instability:" e.g., a supersaturated atmosphere As you think about your next projects, consider this recent "call to arms" from the journal Nature, which points to the Physics of Cloud Formation as key to improved global climate change models. |
||||||
|
4 |
|
Review topics from PHYS 207: semiconductor physics, doping, diodes, transistors, input and output impedance, current gain, voltage gain, and the golden rules of operational amplifiers. Transistors: the book by Faissler provides a nice intro, in a few pages Op Amps: The books by Millman or by Wojslaw each provide a nice intro, in a few pages Peruse, e.g., my copy of Practical Electronics for Inventors, pp. 408- What determines the time constants for heating and cooling your devices? What happens if the PID loop is poorly tuned? Such concepts are needed for UNDERSTANDING the PID Temperature Control Project (and for the upcoming Exam on that project!) |
Pre-lab for Tues Prepare a strong pitch for your ideas conveying what payoff might result from a 2-week investment! Pre-lab for Thurs Specify the parts needed! (We'll do the ordering during class!) |
Send us your annotated bibliography Over the weekend, read my Intro to PCB Design, which uses KiCAD, an ad hoc conglomeration of disparate tools Our work should migrate to FLUX, which is a single, coherent tool for collaborative work: create your account at https://www.flux.ai/signup, then work through a tutorial |
FLUX could be helpful to your workflow (Q: What's the project title, on the software shown?) |
||||||
|
5 |
|
Review topics from PHYS 207: semiconductor physics, doping, diodes, transistors, input and output impedance, current gain, voltage gain, and the golden rules of operational amplifiers. (or peruse my copy of Practical Electronics for Inventors, pp. 408-) Such concepts are needed for building the PID Temperature Control Project described in your LabVIEW text's APPENDIX |
###### Piazza discussion of principles underlying thermoelectrics recommended ###### |
Work through the LabVIEW chapter on Analysis VIs: Curve Fitting Wolfram|Alpha Demos |
Customized control systems play a role in many IWU Physics & Engineering projects: For your first control system, here's a related phenomenon: (But is this modeling appropriate to your case?) |
||||||
|
6 |
|
Writing and thought are intertwined. If you don't write, the quality of your work (as well as your grade) will suffer. So, your lab notebook should show your efforts at understanding PID control (as well as the physics underlying thermoelectrics and thermistors, and the physics underlying the other elements that your team was responsible for). Make it so! The chapter on Analysis VIs guides you on how to extract temperature from the voltage drop across the thermistor, as well as prompting you to think about the physics underlying the temperature dependence of the thermistor's resistance. Your lab notebook should reflect your use of your LabVIEW text. (Also the DIY and USE IT! Activities) Whatever you see, your lab notebook should say what you saw: whatever you get, that's what you wanted (you just have to figure out why you wanted it. Again, writing and thought are intertwined; so write! And don't forget to celebrate the little steps! |
Using water, ice, and salt, create a reservoir whose temperature is below 0°C. Place a bottle of distilled water in there. After equilibration, gently remove bottle and, while recording a video, tap it onto a hard surface.... (Share the video with the class, in order to receive credit!)
Lab Notebook due 9am Sat. |
What is Newtons' Law for Cooling? (and where does it come from?) Why might your measured data show anomalies somewhere near the melting point? |
|||||||
|
7 |
|
Work on your project outside of class meetings! Also work on your project between class meetings! |
(Piazza discussion recommended) |
What is Newtons' Law for Cooling? (and where does it come from?) Why might your measured data show anomalies somewhere near the melting point? |
Inductive Coupling: what's flux got to do with it? Capacitive Coupling: |
||||||
|
8 |
|
Continue to work on temperature projects outside of class meetings! This is essential! Whether for extracting a signal buried in noise, or for analyzing the noise itself, ...or for synthesizing something new and extraordinary, your training with Fourier transforms will be the foundation for how you think of things. This is the second big part of why you are in this class! Also work on your project between class meetings! |
In addition to the DIY and "USE IT!", do as many of the problems from this chapter as you can, and submit these, via OneNote. Credit will be given accordingly.
Lab Notebook due 9am Sat. |
Image Processing without a computer |
Fourier's Trick: breaking complexity into simple waves (Videos from the Sixty Symbols YouTube channel take time, but taking Physics is rewiring your brain!) |
||||||
|
9 |
|
Tie things together as best you can! BEFORE class: Email me! What technical competencies do you want to work towards? (We will be brainstorming Measurement Projects, referencing Walter Smith's Experimental Physics) |
Do as many of the problems from the FFT chapter as you can, and submit these, via OneNote
Push through the quick start tutorials for our Digilent Analog Discovery 2 high-speed digitizers (and explore the bundled analog parts kits) |
Fourier transforms of Images |
Can you do these things? |
||||||
|
10 |
|
Read, for perspective, Ch. 14 of Walter Smith's Experimental Physics Extra Credit Exercise: analyze all options on this simulation 
|
2019 Indep. Projects: Nick, Sherman, Emily: Flux Redux Katie, Cal, Caleb, Eugene: Scavenging Laser Steering Optics Remainder: Analog Discovery II Measurement |
What's an appropriate form of celebration, in IEM, for Fourier's birthday? |
Here's a way to show off in the parking lot: ...start at the 9:20 timestamp on this video Why is light slower in glass or water? (From the Sixty Symbols YouTube channel) |
||||||
|
11 |
|
Move your projects forward! Propose a plan! (Piazza can serve as a Lab Wiki) Share your equipment list/parts list ASAP! Share your best reference materials with your instructor Team Argus, Team Trekkie, & Team LIGO should work through Ch. 10-11 of Experimental Physics Team Chaos: work through materials from Eric Ayars (DC & TS note: Experimental Physics offers a preview of microcontrollers on p. 142, with pointers towards several introductory exercises contained within that text’s resources) |
Check out the Mar 21 links at left (Piazza discussion recommended) Goal: small step by step, work towards developing technical competencies |
Don't forget to keep taking steps in your LabVIEW development!
Driven Oscillator Coupled Oscillators Wave Motion Wave Addition Diffraction |
On the origin of instabilities: |
||||||
|
12 |
|
Work on your projects
outside of class meetings! Move your projects towards completion! |
Lab notebooks due 9am Sat. | Don't forget to keep taking steps in your LabVIEW development! | |||||||
|
13 |
|
Time's up: document your work for the next group to take it up. (Share photos!!) |
Can you generate a frequency SWEEP? (You do need to know what a Bode plot is) |
Don't forget to keep taking steps in your LabVIEW development! |
Share something wonderful on our Discussion page Also: Summer Internship Applications (If a link is bad, just do a browser search!) Squeezed Quantum Measurement is providing revolutionary capabilities: 
|
||||||
|
14 |
|
Read p. 119-141 of Walter Smith's Experimental Physics and associated lab materials Answer the PRE-LAB QUESTIONS! First try an oscilloscope to examine your signal. Then extract information via a lock-in amplifier Make use of the simulated lock-in from Walter Smith's Experimental Physics text |
Seek out extra readings about lock-in amplification |
Don't forget to keep taking steps in your LabVIEW development! | |||||||
|
15 |
|
to World Domination involves conversations about a whimsically selected "Top 5" set of projects from your Article of Interest Log Readings |
Don't forget to keep taking steps in your LabVIEW development! |
Remember, all information is physical: I'm interested in ways to recover information that appears to be dissipated during transmission. If we are clever enough, there can be ways of recovering "lost" information: ...Wanna play? |
|||||||
|
16 |
|
Fun sites:
The Signal Path Open Tech Lab TheBenHeckShow Scullcom Hobby Electronics |