Heather Logan
@helogan.bsky.social
Theoretical particle physicist, university professor, nature enthusiast, Wiccan HPS (dual Lexi/Gard), autistic person. She/her.
https://people.physics.carleton.ca/~logan/
https://people.physics.carleton.ca/~logan/
If one has hundreds of mugs, a resolution to not buy any more mugs in the next year seems like a good move.
November 30, 2025 at 4:26 PM
If one has hundreds of mugs, a resolution to not buy any more mugs in the next year seems like a good move.
This is one of the many reasons why slides are your friend!
November 28, 2025 at 12:34 PM
This is one of the many reasons why slides are your friend!
This reminds me of warfarin, the research on which was funded by the (U.) Wisconsin Alumni Research Foundation (WARF)!
November 23, 2025 at 6:28 PM
This reminds me of warfarin, the research on which was funded by the (U.) Wisconsin Alumni Research Foundation (WARF)!
This is such a great idea! Are these posters available somewhere? (Thinking ahead to next year.)
November 23, 2025 at 1:56 PM
This is such a great idea! Are these posters available somewhere? (Thinking ahead to next year.)
Reposted by Heather Logan
Everyone teaching right now sees lots of evidence for this. Students using LLMs are, to varying degrees, incapable of independently doing the things they are supposedly learning, the same way that students copying answers from a solutions manual then struggle to do something similar on an exam.
November 21, 2025 at 1:40 PM
Everyone teaching right now sees lots of evidence for this. Students using LLMs are, to varying degrees, incapable of independently doing the things they are supposedly learning, the same way that students copying answers from a solutions manual then struggle to do something similar on an exam.
Reposted by Heather Logan
Neurodivergents against Microsoft
November 21, 2025 at 1:57 PM
Neurodivergents against Microsoft
.... Do ghosts even *have* bones?
November 20, 2025 at 11:05 PM
.... Do ghosts even *have* bones?
Did a slopbot make that rainbow.
November 20, 2025 at 9:40 PM
Did a slopbot make that rainbow.
I think I got one of these from the Pearson textbook rep the other day.
Also I think a lot of office-workers don't realize that "recalling" an email does nothing if the recipient isn't using Outlook.
Also I think a lot of office-workers don't realize that "recalling" an email does nothing if the recipient isn't using Outlook.
November 19, 2025 at 6:06 PM
I think I got one of these from the Pearson textbook rep the other day.
Also I think a lot of office-workers don't realize that "recalling" an email does nothing if the recipient isn't using Outlook.
Also I think a lot of office-workers don't realize that "recalling" an email does nothing if the recipient isn't using Outlook.
If you think cloudflares are damaging, just wait till we get hit with the next cloud mass ejection.
November 18, 2025 at 1:35 PM
If you think cloudflares are damaging, just wait till we get hit with the next cloud mass ejection.
Wait. He was pals with Deepak Chopra AND Lawrence Krauss?! I thought those two were arch-Twitter-enemies?
November 13, 2025 at 1:04 AM
Wait. He was pals with Deepak Chopra AND Lawrence Krauss?! I thought those two were arch-Twitter-enemies?
You speak it with other people in Akkadimia, obviously! 😉
November 12, 2025 at 10:06 PM
You speak it with other people in Akkadimia, obviously! 😉
My dad has been calling it 'Home Despot' since I was a kid, simply because it's funny.
November 12, 2025 at 1:09 PM
My dad has been calling it 'Home Despot' since I was a kid, simply because it's funny.
This is why potlucks are a thing!
Oh, your guests are flying to see you and can't bring food? I'm sure you'll be fine with covering the cost of their airfare and lodging in exchange.
Oh, your guests are flying to see you and can't bring food? I'm sure you'll be fine with covering the cost of their airfare and lodging in exchange.
November 8, 2025 at 2:16 PM
This is why potlucks are a thing!
Oh, your guests are flying to see you and can't bring food? I'm sure you'll be fine with covering the cost of their airfare and lodging in exchange.
Oh, your guests are flying to see you and can't bring food? I'm sure you'll be fine with covering the cost of their airfare and lodging in exchange.
... which quantize angular momentum in integer units of h-bar (the reduced Planck constant).
But the electron's intrinsic angular momentum is hbar/2. It cannot be expressed as a spatial wavefunction. It indeed is not a ball, and is not rotating.
But the electron's intrinsic angular momentum is hbar/2. It cannot be expressed as a spatial wavefunction. It indeed is not a ball, and is not rotating.
November 7, 2025 at 7:55 PM
... which quantize angular momentum in integer units of h-bar (the reduced Planck constant).
But the electron's intrinsic angular momentum is hbar/2. It cannot be expressed as a spatial wavefunction. It indeed is not a ball, and is not rotating.
But the electron's intrinsic angular momentum is hbar/2. It cannot be expressed as a spatial wavefunction. It indeed is not a ball, and is not rotating.
To elaborate on this: any expression of rotational motion that involves spatial coordinates (like the azimuthal angle phi in spherical coordinates) must satisfy Schrodinger's equation. Solutions of Schrodinger's equation for spherically symmetric potentials always involve the spherical harmonics...
November 7, 2025 at 7:55 PM
To elaborate on this: any expression of rotational motion that involves spatial coordinates (like the azimuthal angle phi in spherical coordinates) must satisfy Schrodinger's equation. Solutions of Schrodinger's equation for spherically symmetric potentials always involve the spherical harmonics...
Oh, I see. Like the exp{i phi} in the Y_{11} spherical harmonic. Those are for *orbital* motion, in which something really is orbiting or rotating (example of the latter: rotational modes of a diatomic molecule).
But the meme is about the intrinsic spin of the electron, and the meme is correct.
But the meme is about the intrinsic spin of the electron, and the meme is correct.
November 7, 2025 at 5:55 PM
Oh, I see. Like the exp{i phi} in the Y_{11} spherical harmonic. Those are for *orbital* motion, in which something really is orbiting or rotating (example of the latter: rotational modes of a diatomic molecule).
But the meme is about the intrinsic spin of the electron, and the meme is correct.
But the meme is about the intrinsic spin of the electron, and the meme is correct.
What do you mean by spin wavefunction phase? [genuine question]
November 7, 2025 at 3:53 PM
What do you mean by spin wavefunction phase? [genuine question]