Dr. Craig DeForest ☀️
@craig.deforest.org
Dad, mountaineer, heliophysicist. I lead the PUNCH space mission and direct a team at SwRI. I like science, space, communication, humans, dogs, horses, puns. Lowering barriers and promoting open science are priorities. My personal account; my opinions.
Have it your way. Peace.
November 7, 2025 at 6:04 PM
Have it your way. Peace.
That $(\theta s - \omega t)$ in the exponent represents a function that's rotating relative to the origin: as time advances ($t$ increases) you can keep the function constant by also increasing $\theta$ by a factor of $t \omega / s$. 2/2
November 7, 2025 at 5:39 PM
That $(\theta s - \omega t)$ in the exponent represents a function that's rotating relative to the origin: as time advances ($t$ increases) you can keep the function constant by also increasing $\theta$ by a factor of $t \omega / s$. 2/2
If you write out an analytic wavefunction for a spinning particle, in polar coordinates it will have a coefficient in it like $e^{i (\theta s - \omega t}$ in it (where $s$ is the spin quantum number, $\theta$ is angle around the origin, and $\omega$ is related to the particle's energy). 1/2
November 7, 2025 at 5:36 PM
If you write out an analytic wavefunction for a spinning particle, in polar coordinates it will have a coefficient in it like $e^{i (\theta s - \omega t}$ in it (where $s$ is the spin quantum number, $\theta$ is angle around the origin, and $\omega$ is related to the particle's energy). 1/2
I like the joke every time I see it, but of course "not rotating" just ain't the case. Spin wavefunction phase advances with angle and with time, it is in fact rotating. Rotation, like motion, just gets hinky as you get down to the basics of smooth sinusoidal functions with no additional features.
November 7, 2025 at 3:29 PM
I like the joke every time I see it, but of course "not rotating" just ain't the case. Spin wavefunction phase advances with angle and with time, it is in fact rotating. Rotation, like motion, just gets hinky as you get down to the basics of smooth sinusoidal functions with no additional features.
There was a tongue-in-cheek theory for a while that X-ray telescopes suppress solar flares.
November 6, 2025 at 12:52 PM
There was a tongue-in-cheek theory for a while that X-ray telescopes suppress solar flares.
>didn't ask to be swept up by your 'net'.
Social media publishing being what it is, well, don't know what to say. But I've added you to the list of non-heliophysicists so you won't be picked up again.
Social media publishing being what it is, well, don't know what to say. But I've added you to the list of non-heliophysicists so you won't be picked up again.
November 3, 2025 at 3:30 AM
>didn't ask to be swept up by your 'net'.
Social media publishing being what it is, well, don't know what to say. But I've added you to the list of non-heliophysicists so you won't be picked up again.
Social media publishing being what it is, well, don't know what to say. But I've added you to the list of non-heliophysicists so you won't be picked up again.
Welcome! Your post mentioned CMEs and the Sun, so it got picked up by the #Heliophysics feed. Nice pic, and I'm glad to see your interest. A minor correction: CMEs form at the Sun ("solar activity") and cause geomagnetic activity, not the other way around. Stick around, there's a lot to see.
November 3, 2025 at 2:37 AM
Welcome! Your post mentioned CMEs and the Sun, so it got picked up by the #Heliophysics feed. Nice pic, and I'm glad to see your interest. A minor correction: CMEs form at the Sun ("solar activity") and cause geomagnetic activity, not the other way around. Stick around, there's a lot to see.
Every jet plane has a large tank of precursor chemicals (usually Jet-A). Those nacelles on the wings convert J-A to dihydrogen monoxide and other stuff, to be dumped in the air. Trails can even seed weather patterns. But the shifting position of the Sun has large role to play also: it is autumn.
November 1, 2025 at 3:22 PM
Every jet plane has a large tank of precursor chemicals (usually Jet-A). Those nacelles on the wings convert J-A to dihydrogen monoxide and other stuff, to be dumped in the air. Trails can even seed weather patterns. But the shifting position of the Sun has large role to play also: it is autumn.
PUNCH images 3I pretty much continuously. If you know "about" where it is in the sky, you can spot it moving through the L2 mosaic images easily, especially now near perihelion (it's brighter) and with our recent data improvements. 3I is tracking the predicted hyperbola pretty much exactly.
October 31, 2025 at 3:54 AM
PUNCH images 3I pretty much continuously. If you know "about" where it is in the sky, you can spot it moving through the L2 mosaic images easily, especially now near perihelion (it's brighter) and with our recent data improvements. 3I is tracking the predicted hyperbola pretty much exactly.
Absolutely. Folks have been recycling and sensationalizing news for a long time. It's just a lot easier to do so now, so we're seeing a lot more. (There's also "AI slop" imagery even on real things too – e.g. a genuine ESA release a little down the feed, that I at first took for clickbait.)
October 22, 2025 at 2:23 PM
Absolutely. Folks have been recycling and sensationalizing news for a long time. It's just a lot easier to do so now, so we're seeing a lot more. (There's also "AI slop" imagery even on real things too – e.g. a genuine ESA release a little down the feed, that I at first took for clickbait.)
I created that image. It does not show “the solar wind … coming from a huge coronal hole”. It shows the streamer belt, source of the ordinary “slow” solar wind that fills the plane of the ecliptic.
October 11, 2025 at 2:56 PM
I created that image. It does not show “the solar wind … coming from a huge coronal hole”. It shows the streamer belt, source of the ordinary “slow” solar wind that fills the plane of the ecliptic.