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
Good news everyone. I found our last working Drawdio.
A simple 555 oscillator circuit (output to speaker) where the holder is part of the feedback resistance.
A simple 555 oscillator circuit (output to speaker) where the holder is part of the feedback resistance.
December 12, 2025 at 5:53 PM
Good news everyone. I found our last working Drawdio.
A simple 555 oscillator circuit (output to speaker) where the holder is part of the feedback resistance.
A simple 555 oscillator circuit (output to speaker) where the holder is part of the feedback resistance.
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?
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
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:
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...