emergentsquirrel.bsky.social
@emergentsquirrel.bsky.social
Reposted by emergentsquirrel.bsky.social
🧪
Please consider adding your name to this letter, and repost. The EO and its fact sheet are worth studying in detail.
Please consider adding your name to this letter, and repost. The EO and its fact sheet are worth studying in detail.
🚨 URGENT RESPONSE CALL 🚨
Trump’s Fool’s Gold Science EO is a dangerous sham.
It gives his appointees the power to dismiss entire bodies of research and punish researchers who fail to fall in line with his agenda.
We’ve launched an open letter.
SIGN & SHARE NOW: actionnetwork.org/petitions/op...
Trump’s Fool’s Gold Science EO is a dangerous sham.
It gives his appointees the power to dismiss entire bodies of research and punish researchers who fail to fall in line with his agenda.
We’ve launched an open letter.
SIGN & SHARE NOW: actionnetwork.org/petitions/op...
Sign The Open Letter to Stand Up For Science Now!
Science is under siege. Trump’s latest Executive Order calls for politically appointed science commissars to evaluate research. Join us in adding your name to our open letter condemning Trump’s escala...
actionnetwork.org
May 26, 2025 at 4:35 PM
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Please consider adding your name to this letter, and repost. The EO and its fact sheet are worth studying in detail.
Please consider adding your name to this letter, and repost. The EO and its fact sheet are worth studying in detail.
Reposted by emergentsquirrel.bsky.social
Since I started studying physics 30+ years ago, I don’t think I’ve ever come across a better plain language explanation of why QM and GR haven’t been merged, yet.
www.thebrighterside.news/post/time-is...
www.thebrighterside.news/post/time-is...
February 22, 2025 at 4:47 PM
Since I started studying physics 30+ years ago, I don’t think I’ve ever come across a better plain language explanation of why QM and GR haven’t been merged, yet.
www.thebrighterside.news/post/time-is...
www.thebrighterside.news/post/time-is...
Reposted by emergentsquirrel.bsky.social
Need some inspiration?
“Our predecessors deposed a brain-addled king; they crushed the violent insurrectionists of a slaveholding confederacy; they kicked the Nazis’ asses throughout Europe.”
“No entitled reality-TV has-been backed by an addle-brained billionaire who cheats at video games is going to roll over us now.”
“No entitled reality-TV has-been backed by an addle-brained billionaire who cheats at video games is going to roll over us now.”
Indivisible in The Nation
YouTube video by Indivisible
youtu.be
February 20, 2025 at 3:47 PM
Need some inspiration?
Reproducible irreproducibility
It turns out how a material gets charged by static, positive or negative, depends on it's history - of everything that touched it before. Sobarzo et al identify surface roughening as the manifestation of this history. Popular academic summary attached
It turns out how a material gets charged by static, positive or negative, depends on it's history - of everything that touched it before. Sobarzo et al identify surface roughening as the manifestation of this history. Popular academic summary attached
The secrets of static electricity are finally being revealed
Transfer of charge between surfaces influenced by contact history.
www.nature.com
February 20, 2025 at 2:21 PM
Reproducible irreproducibility
It turns out how a material gets charged by static, positive or negative, depends on it's history - of everything that touched it before. Sobarzo et al identify surface roughening as the manifestation of this history. Popular academic summary attached
It turns out how a material gets charged by static, positive or negative, depends on it's history - of everything that touched it before. Sobarzo et al identify surface roughening as the manifestation of this history. Popular academic summary attached
We seem to be investing more heavily into acquiring funding for doing science, than actually attacking the hardest open problems of the field. How do we know when the goal of solving these problems has been subverted by the goal of acquiring ever more resources to solve the problem? 🧪
February 19, 2025 at 5:30 PM
We seem to be investing more heavily into acquiring funding for doing science, than actually attacking the hardest open problems of the field. How do we know when the goal of solving these problems has been subverted by the goal of acquiring ever more resources to solve the problem? 🧪
Reposted by emergentsquirrel.bsky.social
The measles outbreak in Texas is reminding me of the public letter Roald Dahl wrote about losing his daughter to measles in 1962, just before the vaccine was publicly available.
February 15, 2025 at 5:49 PM
The measles outbreak in Texas is reminding me of the public letter Roald Dahl wrote about losing his daughter to measles in 1962, just before the vaccine was publicly available.
In 1969, a young Tanzanian schoolboy observed that initially hot liquids freeze faster than cool liquids. The Mpemba effect that bears his name was published as
"Cool?", E B Mpemba and D G Osborne 1969 Phys. Educ. 4 172
a remarkable story of innocence and curiosity preserved in the literature. 🧪⚛️
"Cool?", E B Mpemba and D G Osborne 1969 Phys. Educ. 4 172
a remarkable story of innocence and curiosity preserved in the literature. 🧪⚛️
Cool? - IOPscienceSearch
Cool?, E B Mpemba, D G Osborne
iopscience.iop.org
January 31, 2025 at 12:35 AM
In 1969, a young Tanzanian schoolboy observed that initially hot liquids freeze faster than cool liquids. The Mpemba effect that bears his name was published as
"Cool?", E B Mpemba and D G Osborne 1969 Phys. Educ. 4 172
a remarkable story of innocence and curiosity preserved in the literature. 🧪⚛️
"Cool?", E B Mpemba and D G Osborne 1969 Phys. Educ. 4 172
a remarkable story of innocence and curiosity preserved in the literature. 🧪⚛️
Reposted by emergentsquirrel.bsky.social
Feels like the right time to start planning for moving all international scientific conferences to somewhere outside the US.
January 25, 2025 at 2:40 PM
Feels like the right time to start planning for moving all international scientific conferences to somewhere outside the US.
This is a masterclass in academic integrity. It is very rare to understand see this sort of response, but it is the only way out of the mess we are in. Making and correcting errors is the way we learn as a community.
We've had a paper reviewed by ERROR, which has concluded we had a "major error that affects a core conclusion"
Few comments on the conclusion and the process in general
1/n
Few comments on the conclusion and the process in general
1/n
New report! Hehman et al. (2018) "Disproportionate Use of Lethal Force in Policing Is Associated With Regional Racial Biases". Based on the review by @conjugateprior.org, we find a Major Error that affects a core conclusion. We recommend the authors seek a correction.
error.reviews/reviews/hehm...
error.reviews/reviews/hehm...
January 22, 2025 at 1:06 PM
This is a masterclass in academic integrity. It is very rare to understand see this sort of response, but it is the only way out of the mess we are in. Making and correcting errors is the way we learn as a community.
There is a fundamental tension between true unfiltered honesty in science and academic consensus. An honest statement of perspective - how one expert sees the connections between empirical truths - is bound to disagree with another sufficiently independent expert's honest perspective. 🧪
January 21, 2025 at 2:12 PM
There is a fundamental tension between true unfiltered honesty in science and academic consensus. An honest statement of perspective - how one expert sees the connections between empirical truths - is bound to disagree with another sufficiently independent expert's honest perspective. 🧪
Reposted by emergentsquirrel.bsky.social
#PhysicsFactlet
If you put apertures of different shapes in the path of a plane wave, you get different diffraction patterns. And with a bit of experience you can say a lot about the aperture shape just by looking at the diffraction pattern.
#Physics #Optics #Photonics #ITeachPhysics
If you put apertures of different shapes in the path of a plane wave, you get different diffraction patterns. And with a bit of experience you can say a lot about the aperture shape just by looking at the diffraction pattern.
#Physics #Optics #Photonics #ITeachPhysics
September 16, 2024 at 11:03 AM
#PhysicsFactlet
If you put apertures of different shapes in the path of a plane wave, you get different diffraction patterns. And with a bit of experience you can say a lot about the aperture shape just by looking at the diffraction pattern.
#Physics #Optics #Photonics #ITeachPhysics
If you put apertures of different shapes in the path of a plane wave, you get different diffraction patterns. And with a bit of experience you can say a lot about the aperture shape just by looking at the diffraction pattern.
#Physics #Optics #Photonics #ITeachPhysics
Reposted by emergentsquirrel.bsky.social
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Did you ever see the nacreous clouds?
They form when unusually cold temperatures in the usually cloudless lower stratosphere form ice crystals.
Image credit: P-M Hedén (www.clearskies.se)
Image cource➡️ apod.nasa.gov/apod/ap20011...
🧪 🔭 ⚛️ #SciArt
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Did you ever see the nacreous clouds?
They form when unusually cold temperatures in the usually cloudless lower stratosphere form ice crystals.
Image credit: P-M Hedén (www.clearskies.se)
Image cource➡️ apod.nasa.gov/apod/ap20011...
🧪 🔭 ⚛️ #SciArt
January 19, 2025 at 7:59 PM
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1/
Did you ever see the nacreous clouds?
They form when unusually cold temperatures in the usually cloudless lower stratosphere form ice crystals.
Image credit: P-M Hedén (www.clearskies.se)
Image cource➡️ apod.nasa.gov/apod/ap20011...
🧪 🔭 ⚛️ #SciArt
1/
Did you ever see the nacreous clouds?
They form when unusually cold temperatures in the usually cloudless lower stratosphere form ice crystals.
Image credit: P-M Hedén (www.clearskies.se)
Image cource➡️ apod.nasa.gov/apod/ap20011...
🧪 🔭 ⚛️ #SciArt
Reposted by emergentsquirrel.bsky.social
Some unalloyed good news. A fast, reliable blood test will make life easier for so many women, who currently have to have a diagnosis confirmed surgically and can wait as long as 8-10 years to get to the point where a doctor refers them for it.
December 30, 2024 at 8:45 AM
Some unalloyed good news. A fast, reliable blood test will make life easier for so many women, who currently have to have a diagnosis confirmed surgically and can wait as long as 8-10 years to get to the point where a doctor refers them for it.
Is there a crack in quantum gravity's armor?
Dirac fermions in curved spacetime transform into massive fermions with additional potentials. These may be unform vector potentials (Harper-Hofstadter) or periodic scalar potentials (Aubry-André).
🧪⚛️
Dirac fermions in curved spacetime transform into massive fermions with additional potentials. These may be unform vector potentials (Harper-Hofstadter) or periodic scalar potentials (Aubry-André).
🧪⚛️
Magnetic fields (gauge) and gravitational fields (metrics) are very distinct entities. Yet, surprisingly, they are equivalent under a "rotation" combining position and momentum
x,p → x+p,x-p
Details here
arxiv.org/abs/2412.03647
#physics #quantum #gravity
x,p → x+p,x-p
Details here
arxiv.org/abs/2412.03647
#physics #quantum #gravity
Gauge fields induced by curved spacetime on a lattice
I found an extended duality (triality) between Dirac fermions in periodic spacetime metrics, nonrelativistic fermions in gauge fields (e.g., Harper-Hofstadter model), and in periodic scalar fields on ...
arxiv.org
December 18, 2024 at 11:30 PM
Is there a crack in quantum gravity's armor?
Dirac fermions in curved spacetime transform into massive fermions with additional potentials. These may be unform vector potentials (Harper-Hofstadter) or periodic scalar potentials (Aubry-André).
🧪⚛️
Dirac fermions in curved spacetime transform into massive fermions with additional potentials. These may be unform vector potentials (Harper-Hofstadter) or periodic scalar potentials (Aubry-André).
🧪⚛️
‘The student must inspire the teacher to teach’
- Late Zakir Hussain
While I disagree with the imperative, the sentiment resonates deeply.
Context here: kalavandanam.com/students-job...
An engaged student is a gift not to be discounted.
- Late Zakir Hussain
While I disagree with the imperative, the sentiment resonates deeply.
Context here: kalavandanam.com/students-job...
An engaged student is a gift not to be discounted.
It’s Not a Teacher’s Job to Teach. It is a Student’s Job to Learn. - Kala Vandanam
By Suchitra Sairam “A teacher never teaches. A student learns.” -Zakir Hussain Internationally acclaimed Indian music maestro Ustad Zakir Hussain is the pre-eminent tabla virtuoso of our times. He’s a...
kalavandanam.com
December 16, 2024 at 1:42 PM
‘The student must inspire the teacher to teach’
- Late Zakir Hussain
While I disagree with the imperative, the sentiment resonates deeply.
Context here: kalavandanam.com/students-job...
An engaged student is a gift not to be discounted.
- Late Zakir Hussain
While I disagree with the imperative, the sentiment resonates deeply.
Context here: kalavandanam.com/students-job...
An engaged student is a gift not to be discounted.
Reposted by emergentsquirrel.bsky.social
#iTeachPhysics: Dynamics Cart 2.0!
- Pull with two handles in 2D
- Include friction & air resistance
- Free-body diagrams
- Position, velocity, acceleration, & force vs time graphs.
- Graph matching challenges
Link in reply
🍎🎢⚛️♾️
Video Description: screen grab of these features on the simulation.
- Pull with two handles in 2D
- Include friction & air resistance
- Free-body diagrams
- Position, velocity, acceleration, & force vs time graphs.
- Graph matching challenges
Link in reply
🍎🎢⚛️♾️
Video Description: screen grab of these features on the simulation.
December 16, 2024 at 12:53 PM
#iTeachPhysics: Dynamics Cart 2.0!
- Pull with two handles in 2D
- Include friction & air resistance
- Free-body diagrams
- Position, velocity, acceleration, & force vs time graphs.
- Graph matching challenges
Link in reply
🍎🎢⚛️♾️
Video Description: screen grab of these features on the simulation.
- Pull with two handles in 2D
- Include friction & air resistance
- Free-body diagrams
- Position, velocity, acceleration, & force vs time graphs.
- Graph matching challenges
Link in reply
🍎🎢⚛️♾️
Video Description: screen grab of these features on the simulation.
Reposted by emergentsquirrel.bsky.social
🧪🎅 12 Days of Tools for Science Management 🦠🎄
Twas the weeks before Christmas when all through the lab, not a beaker was stirring, not even a culture-of-Pseudomonas. The meetings have lessened (kinda), the textbooks are closed.. & I found myself reflecting on how we get things done in academia (1/4)
Twas the weeks before Christmas when all through the lab, not a beaker was stirring, not even a culture-of-Pseudomonas. The meetings have lessened (kinda), the textbooks are closed.. & I found myself reflecting on how we get things done in academia (1/4)
December 11, 2024 at 2:18 PM
🧪🎅 12 Days of Tools for Science Management 🦠🎄
Twas the weeks before Christmas when all through the lab, not a beaker was stirring, not even a culture-of-Pseudomonas. The meetings have lessened (kinda), the textbooks are closed.. & I found myself reflecting on how we get things done in academia (1/4)
Twas the weeks before Christmas when all through the lab, not a beaker was stirring, not even a culture-of-Pseudomonas. The meetings have lessened (kinda), the textbooks are closed.. & I found myself reflecting on how we get things done in academia (1/4)
Random guessing is better than trying to figure out which knot is stronger from visuals!
So apparently knots tie up the average human's intuition to such an extent...
How much of the world could we better understand if we could wrap our head around how stuff entangles?
phys.org/news/2024-12...
🧪🔬⚛️
So apparently knots tie up the average human's intuition to such an extent...
How much of the world could we better understand if we could wrap our head around how stuff entangles?
phys.org/news/2024-12...
🧪🔬⚛️
Tangled Physics: Knots Strain Intuitive Physical Reasoning
Abstract. Whereas decades of research have cataloged striking errors in physical reasoning, a resurgence of interest in intuitive physics has revealed humans’ remarkable ability to successfully predic...
direct.mit.edu
December 14, 2024 at 4:48 PM
Random guessing is better than trying to figure out which knot is stronger from visuals!
So apparently knots tie up the average human's intuition to such an extent...
How much of the world could we better understand if we could wrap our head around how stuff entangles?
phys.org/news/2024-12...
🧪🔬⚛️
So apparently knots tie up the average human's intuition to such an extent...
How much of the world could we better understand if we could wrap our head around how stuff entangles?
phys.org/news/2024-12...
🧪🔬⚛️