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Optics

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Due to Culture Day landing on a Monday there was no optics video. Everything landed on Wednesday. This term I say at the end of the table and pointed the laser to the east. This actually worked well. The terrarium was an excellent demonstrator of total internal refection and led naturally to fiber optics. I need a fiber optic toy. This approach worked better because there was no blocking mirror desk. I moved through rainbows and convex lenses  wrapping at 12:51 The Thursday laboratory replicated the equipment of the prior term, with an additional graduated cylinder to provide more data above the 1000 ml beakers value. The board layout took 30 minutes from 8:00 to 8:30. With 8:00 attendance at three the slow start allowed more to arrive ahead of demonstrating the measurements. In a break from past practice, the full lab through to the lab report was on the board from 8:30. Melsihna and Va...

Founding Day 2025

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09:10 Muster was scheduled for 08:00 along the road next to Spanish Wall ball field. The evening before, floats had already parked next to the Kolonia town gym. Two strong wind bursts along with torrential rain at sunset decimated the bananas on the ChuuChok float. The ChuuChok team moved the float to Nahnpohnmal to rebuild in an all night effort.  The theme for the 32nd founding day was "Rooted in tradition, growing through innovation, thriving with resilience."  09:22 Parade launch was scheduled for 09:00 with actual departure at twenty minutes after the hour. There is a low handing category five internet cable across the driveway at the gym. A stick was used to flip the cable over the taller floats.  09:32 The parade reached the capitol at 09:32.  09:34 Keeping the state flags four abreast put one state across the centerline, which was not problematic as traffic was essentially at a standstill with motorists videoing...

Improving the return rate on student evaluations

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Return rates on student evaluations of instructor, course, and course materials have been low. The evaluations are anonymous to encourage respondents to respond honestly without fear of retribution. With thanks to a colleague for the following concept, the following is one way to encourage return of evaluations. The concept is to have students submit a screenshot of the evaluation header for credit. The following directions were given for the assignment: Upload a screenshot of the student evaluation header image after completing the evaluation. Just the header image. This is an example header from the summer 2022 course evaluation. You are to submit an image of the current header. Do not include answers to questions in the screenshot! After you finish the evaluation, submit the header image so that I will know you completed the evaluation. The evaluation is available at: [redacted] Course prefix, number, and section: MS 150/O1 Course name: Statistics Instructor last name: Lee Ling Inst...

Gemini to convert table image to comma separated values

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Tabular data in Desmos is not directly exportable in any form, nor is there a way to copy and paste the data in a Desmos table.  A screenshot of the table was uploaded into Google Gemini with the direction to convert table image to a spreadsheet format. Gemini returned a comma separated list. That list was copied and was pasted into a text editor. The text editor was used to save the file as a comma separated list (.csv) and then imported into a spreadsheet for analysis of frequency versus the speed of sound. 

Colors of light

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Monday the Limits of Light posted by Go Wild was used to introduce the connection between colors and wavelengths along with the general notion of the electromagnetic spectrum. Wednesday cold opened with a video titled Indigo by Indonesian singer-songwriter Nicole "Niki" Zefanya  No one paid any attention to the cold open. I asked the class what the video was about, but no one had watched the video. One student did eventually hit on "blue" as the theme. I then pivoted to the spectrum boxes. The students saw six colors. No one had any issue with that determination. I used this to suggest that in order to understand the science of a particular period one has to understand the cultural understandings of that age. No one caught the six reference.  Once I made the explicit connection I moved on to seven days in a week, seven musical notes in an octave, seven visible moving objects in the Newtonian night sky, seven Platonic solids, and the sevens in Newton...