M.J. Dunlavy
@mdunlavyca.bsky.social
He/Him.
Always looking for ways to show the wonders of physics and the universe.
Audio, Video, Disco.
All views and opinions are my own.
Location: Halifax, probably in the lab
https://demos.smu.ca
Always looking for ways to show the wonders of physics and the universe.
Audio, Video, Disco.
All views and opinions are my own.
Location: Halifax, probably in the lab
https://demos.smu.ca
Did you know the colour of an LED is dependent on the band gap of the doped semiconductor inside?
And that that band gap is temperature dependent?
And!
If you (gently) dunk said LED in liqN2, neat things happen!
#iTeachPhysics
And that that band gap is temperature dependent?
And!
If you (gently) dunk said LED in liqN2, neat things happen!
#iTeachPhysics
November 3, 2025 at 6:03 PM
Did you know the colour of an LED is dependent on the band gap of the doped semiconductor inside?
And that that band gap is temperature dependent?
And!
If you (gently) dunk said LED in liqN2, neat things happen!
#iTeachPhysics
And that that band gap is temperature dependent?
And!
If you (gently) dunk said LED in liqN2, neat things happen!
#iTeachPhysics
Posting later today
October 30, 2025 at 4:29 PM
Posting later today
No Strings Attached!
October 29, 2025 at 5:37 PM
No Strings Attached!
Never not satisfying.
October 29, 2025 at 3:48 PM
Never not satisfying.
Outtake. Trying and failing to get a magnet to spin on a superconductor without knocking it off the disc. Three misses is a strikeout!
October 28, 2025 at 5:50 PM
Outtake. Trying and failing to get a magnet to spin on a superconductor without knocking it off the disc. Three misses is a strikeout!
Let's all just take a second to appreciate this oscillating drop of liquid nitrogen. Ok? Is that too much to ask?
October 27, 2025 at 5:27 PM
Let's all just take a second to appreciate this oscillating drop of liquid nitrogen. Ok? Is that too much to ask?
For context, Plottertron is our in-house plotting program for 1st yr labs. He works in any browser and performs weighted lst-sq fits.
October 16, 2025 at 5:08 PM
For context, Plottertron is our in-house plotting program for 1st yr labs. He works in any browser and performs weighted lst-sq fits.
Learning a 3d modelling package for another project and got carried away.
Plottertron looks mad to be in 3D.
Plottertron looks mad to be in 3D.
October 16, 2025 at 5:06 PM
Learning a 3d modelling package for another project and got carried away.
Plottertron looks mad to be in 3D.
Plottertron looks mad to be in 3D.
Weather Model Projection
Halifax:Rain::Neo:Bullets
Halifax:Rain::Neo:Bullets
October 7, 2025 at 5:23 PM
Weather Model Projection
Halifax:Rain::Neo:Bullets
Halifax:Rain::Neo:Bullets
"Wait, are you telling me THE Wilford Brimley plays Blair?"
"No, just ..."
"No, just ..."
September 29, 2025 at 6:39 PM
"Wait, are you telling me THE Wilford Brimley plays Blair?"
"No, just ..."
"No, just ..."
Been undergoing a lot of personal internal reflection...
September 25, 2025 at 4:50 PM
Been undergoing a lot of personal internal reflection...
Super slo-mo (1000fps) and super zoomed-in clip of a water ripples. The low resolution and weird CCD-induced color scheme leave something reminiscent of fireworks!
September 23, 2025 at 7:32 PM
Super slo-mo (1000fps) and super zoomed-in clip of a water ripples. The low resolution and weird CCD-induced color scheme leave something reminiscent of fireworks!
Now that term is finally underway, hopefully video production will increase from its current moribund rate. Here's a test shot from this morning:
September 17, 2025 at 4:15 PM
Now that term is finally underway, hopefully video production will increase from its current moribund rate. Here's a test shot from this morning:
Campus Entomology. The good news is that it is on the outside the window,
September 16, 2025 at 7:31 PM
Campus Entomology. The good news is that it is on the outside the window,
What could possibly go wrong?
September 10, 2025 at 5:28 PM
What could possibly go wrong?
What could go wrong?
September 9, 2025 at 2:12 PM
What could go wrong?
If anyone needs 500 pictures and videos featuring this chill deer outside the SMU atrium, let me know.
August 6, 2025 at 8:11 PM
If anyone needs 500 pictures and videos featuring this chill deer outside the SMU atrium, let me know.
And finally, it's done. The video will be released tomorrow on the SMUPhysics YouTube channel and next week on demos.smu.ca with a fuller explanation on how to do it yourself (with lots of warnings about ways to NOT do it!).
July 31, 2025 at 6:20 PM
And finally, it's done. The video will be released tomorrow on the SMUPhysics YouTube channel and next week on demos.smu.ca with a fuller explanation on how to do it yourself (with lots of warnings about ways to NOT do it!).
Back to the drawing board this morning. Simplified the build, "modified" the light sensor with a pair of sharp pliers, and I think it's better...
July 31, 2025 at 2:33 PM
Back to the drawing board this morning. Simplified the build, "modified" the light sensor with a pair of sharp pliers, and I think it's better...
More work in progress pics:
July 30, 2025 at 2:16 PM
More work in progress pics:
No matter what else happens with this upcoming video, I'm pretty happy with the artificial star I made.
July 30, 2025 at 2:11 PM
No matter what else happens with this upcoming video, I'm pretty happy with the artificial star I made.
Been awhile since I did an over-complicated build.
July 29, 2025 at 4:53 PM
Been awhile since I did an over-complicated build.