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#physics

39 posts35 participants8 posts today
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MediaFaro News Digest

LHC breaks the record for heaviest antimatter nucleus ever seen.

Researchers have found evidence of an exotic form of antimatter in the aftermath of colliding extremely fast lead ions.

Benjamin Dönigus at Goethe University Frankfurt and colleagues from the Large Hadron Collider at the Geneva CERN particle physics laboratory have created an unprecedentedly heavy antimatter nucleus: antihyperhelium-4.

mediafaro.org/article/20250422

A particle smasher has created antihyperhelium-4, the heaviest antimatter nucleus ever made in a physics labDuncan Walker/Getty Images
New Scientist · LHC breaks the record for heaviest antimatter nucleus ever seen.By Karmela Padavic-Callaghan
#LargeHadronCollider#LHC#CERN
Public
Nicole Sharp

Bifurcating Waterways

Your typical river has a single water basin and drains along a river or two on its way to the sea. But there are a handful of rivers and lakes that don’t obey our usual expectations. Some rivers flow in two directions. Some lakes have multiple outlets, each to a separate water basin. That means that water from a single lake can wind up in two entirely different bodies of water.

The most famous example of these odd waterways is South America’s Casiquiare River, seen running north to south in the image above. This navigable river connects the Orinoco River (flowing east to west in this image) with the Rio Negro (not pictured). Since the Rio Negro eventually joins the Amazon, the Casiquiare River’s meandering, nearly-flat course connects the continent’s two largest basins: the Orinoco and the Amazon.

For more strange waterways across the Americas, check out this review paper, which describes a total of 9 such hydrological head-scratchers. (Image credit: Coordenação-Geral de Observação da Terra/INPE; research credit: R. Sowby and A. Siegel; via Eos)

Black and white satellite image showing the Casiquiare River (flowing north to south in the center of this image), which connects the Orinoco River (running east to west) with the Rio Negro.
#fluidDynamics#geophysics#physics
Public
A-Dub

How well-intentioned white male physicists maintain ignorance of inequity and justify inaction, by Melissa Dancy and Apriel Hodari:

arxiv.org/abs/2210.03522

arXiv logo
arXiv.orgHow well-intentioned white male physicists maintain ignorance of inequity and justify inactionBackground: We present an analysis of interviews with 27 self-identified progressive white-male physics faculty and graduate students discussing race and gender in physics. White men dominate most STEM fields and are particularly overrepresented in positions of status and influence (i.e. full professors, chairs, deans, etc.), positioning them as a potentially powerful demographic for enacting systemic reform. Despite their proclaimed outrage at and interest in addressing inequity, they frequently engage in patterns of belief, speech and (in)action that ultimately support the status quo of white male privilege in opposition to their intentions. Results: The white male physicists we interviewed used numerous discourses which support racist and sexist norms and position them as powerless to disrupt their own privilege. We present and discuss three overarching themes, seen in our data, demonstrating how highly intelligent, well-intentioned people of privilege maintain their power and privilege despite their own intentions: 1) Denying inequity is physically near them, 2) Locating causes of inequity in large societal systems over which they have little influence and 3) Justifying inaction. Conclusions: Despite being progressively minded, well-meaning, and highly intelligent, these men are frequently complicit in racism and sexism in physics. We end with recommendations for helping these men to engage the power they hold to better work with women and people of color in disrupting inequity in physics.
#Physics#Racism#Sexism
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KilleansRow 🇺🇲 🇺🇦🍀

1/2 Fundamentally Not Really There Dept: Our classification of #Nuclear tech information delayed but did not stop proliferation of the technology. Soon #Russia, #China, #India and many others were building things or initiating programs.The next great leap in #CleanEnergy and advanced propulsion has been effectively sitting there since the 1940’s . It does not and will not require the intervention of #NHI for us to finally figure it out.The potential is there for anyone with up to date #Physics…

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Flipboard Science Desk

The passage of time is measured pretty much the same across much of the world, counting the seconds between “then” and “now.” But what if “then” and “now” can’t always be anticipated? @ScienceAlert has more on an entirely new way to measure time:

flip.it/X.9wY4

ScienceAlert · Physicists Found an Entirely New Way to Measure TimeDetermining the passage of time in our world of ticking clocks and oscillating pendulums is a simple case of counting the seconds between 'then' and 'now'.
#Science#Time#Physics
Continued thread
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Astro Hawk (Ian Kluft) 🚀🛰️

An interesting effect of the concept of a rotating universe immediately comes to mind... With enough data on rotational velocities of celestial objects, it should be possible to eventually (maybe still years or decades away) roughly compute a point everything is rotating around. Curious to learn where that is and what's there. #space #astronomy #physics #science

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