Alastair Roxburgh

QMU physics prof. Ginestra Bianconi proposes a new quantum gravity theory in which gravity is not a fundamental force but is “derived from an entropic action coupling matter fields with geometry”. The theory potentially explains dark matter (G-field) & dark energy (Λ).
www.msn.com/en-us/news/t...

Essential reading about the Ukraine conflict:
The reason why this is no time for Zelensky to grovel to Trump!
www.msn.com/en-us/news/o...

Tragically, the willfully ignorant low-lifes currently occupying the White House are proud of their occupancy of the lower half of the bell curve. If anything disproves the adage that suits maketh the man, it would be their treatment of Volodymyr Zelensky in the Oval Office. He outshone them all!

As far as I can recall, Lieutenant Columbo never lost a case.

My son and our Dalek on Worthing beach - Summer 2023.

"I must go down to the sea again,
To the lonely sea and the sky,
I left my son and Dalek there,
I wonder if they're dry."

After John Masefield (and Spike Milligan)

Sen. Warren, we admired your masterful questioning of the brain-burned wackadoodle RFKJr! He again demonstrated that he was operating entirely beyond his depth limit and bent on corruptly spreading and personally benefitting from the deranged influence he'd have as Secretary of Health.

Does the #timescape theory herald the end of the 'physics doldrums' that began with the elevation of string theory into an unobserved & unprovable set of beliefs (SUSY), and ended when the exponential improvements in sensor tech overwhelmed us with observations that demanded a more direct approach?

Hertz, Clerk Maxwell, and Heaviside would have enjoyed these products of millimeterwave machine vision!

Many if not most plastics go hand in hand with the fossil fuels they are made from. For succeeding generations to enjoy long lives in a world free from the endocrine disrupting effects of micro plastics pollution, we must find viable alternatives (such as glass, wood, & paper) before it's too late!

This sultry scene evokes for me the poignancy of Replicant's Soliloquy in Blade Runner (superbly portrayed by Rutger Hauer):
"I watched c-beams glitter in the dark near the Tannhäuser Gate." [but unless we can learn to live & let live] "All those moments will be lost in time, like tears in rain."

Dark energy 'doesn’t exist' so can't be pushing 'lumpy' Universe apart – study One of the biggest mysteries in science – dark energy – doesn't actually exist, according to researchers looking to solve the riddle of how the Universe is expan...

"Dark Energy does not exist" [A study, via the Royal Astronomical Society] 🧪🌌⚫🔋❌

"New evidence supports the 'timescape' model of expansion, which doesn't have a need for dark energy"

ras.ac.uk/news-and-pre...

#dark #energy #universe #expansion #acceleration #time #relativity #space #astronomy

Kudos to Kiwi Astronomers! Dark Energy? Maybe we don't need it! Having done work many years ago at NZ's U of Canterbury Mount John Observatory, I could not help but notice this article (see the report below for a link to the open-source journal article). www.msn.com/en-us/news/t...

A friendly Photoshopped 'wave' to espresso PID fans! 😜
My setup: Rancilio Silvia with Auber PID + clockwork timer; Rancilio Rocky Grinder; Rancilio bottomless portfilter conversion with double basket; Matlow 58 mm SS Dosing Ring; TimeMore coffee scale; Espresso Gear 58 mm convex Barista tamper.☕

GitHub - virtualagc/virtualagc: Virtual Apollo Guidance Computer (AGC) software Virtual Apollo Guidance Computer (AGC) software. Contribute to virtualagc/virtualagc development by creating an account on GitHub.

AGC simulator runs original Apollo code
github.com/virtualagc/v...
Ron Burkey runs Virtual AGC. You can download software that faithfully emulates the AGC and executes real Apollo flight software. Compiler is included if you want to compile the original AGC codef. Amazing.
www.ibiblio.org/apollo/

This cool bit of nerdism deserves wider recognition. While probably not as difficult as writing an AGC simulator (see the next post), it seems oddly more relevant now due to the interest in intelligent machines and machine vision.
www.eetimes.com/using-a-xili...

FYI. I found this in my archive, labeled as
"Nerdy stuff I did when I was in high school!" 😁

This picture tickled my physics funny bone!

Quantum computing in 2022: Newsful, but how useful? The future of quantum computing isn’t quite here yet. But that doesn’t mean that companies shouldn’t prepare.

Is QC the Emperor's New Clothes?
Deloitte: "We don't yet know the 'magic number' of [qubits]...that will make QCs useful in the real world. ...it is unclear if we need...a thousand, a million or a billion to make QCs [useful] in multiple real-world apps."
www2.deloitte.com/us/en/insigh...

Astronomers Radically Reimagine the Making of the Planets Observations of faraway worlds have forced a near-total rewrite of the story of our solar system.

The wonders of VLB radio astronomy!
www.wired.com/story/astron...

A fun AI fact of broad significance. Like some cars, certain animals, e.g., army ants, can also be "trapped" by circles. They follow pheromone trails and can get stuck in a loop if the trail forms a circle, walking in circles until exhaustion sets in. Please reply if you know of other examples

Ups and Downs in the Search for Dark Matter Two leading dark-matter-detection experiments find conflicting results in the search for dark matter.

The chart pinned on my profile is from Rafael F. Lang,
"Ups and Downs in the Search for Dark Matter"
Dec 16, 2013, Physics 6, 136. Although DM research now looks beyond WIMPs & neutrinos, this diagram (shown in simplified form below) is still a conversation opener😉
physics.aps.org/articles/v6/...

Nice idea! What is the likely range of planetesimal sizes?

JWST spectrometer refines redshifts of distant galaxies – Physics World One galaxy is much closer than previously thought

Apr 20, 2023
How old is JWST dusty galaxy CEERS-93316? Previously reported with redshift z=16.4 (a mere 250 My after Big Bang), revised spectrographic data modeling now gives z=4.9 (a less problematic 1,217 My after Big Bang)! physicsworld.com/a/jwst-spect...
ArXiv: arxiv.org/pdf/2303.154...

University of Central Florida | Top-Ranked by U.S News & World Reports UCF unleashes the potential of students, faculty & the community. As Florida's next-generation public research institute, we are shaping the future & working to solve the world’s most challenging prob...

Apr 23, 2023
Planet Decision That Booted Out Pluto is Rooted in Folklore, Astrology, Study Suggests
From ucf.edu

May 27, 2023
Axions Would Solve Another Major Problem in Physics
www.quantamagazine.org/axions-would...

Jun 11 2024
Could Physicist's Gravity Revelation
End The Need for #DarkMatter?

Prof Richard Lieu's new theory proposes that the additional gravity needed to hold galaxies together could instead come from shell-like, topological defects in common cosmological structures.
msn.com/en-us/news/t...

Jun 21, 2023
AXIONS Under Scrutiny: Physicists May Be Tantalizingly Close to Identifying What Dark Matter is Made Of!
msn.com/en-us/news/t...

YouTube video by Anton Petrov Space-Time Distortions and Ancient Light Point at Nature of Dark Matter

May 27, 2023
Anton Petrov video reviews new evidence for the Axion particle as a dark matter candidate. "Space-Time Distortions and Ancient Light Point at Nature of Dark Matter"
www.youtube.com/watch?v=EuGK...

YouTube video by Sabine Hossenfelder Dark Matter: The Situation has Changed

Nov 28, 2021
Another gobbledygook-free science report from Dr Sabine Hossebfelder on the enigma of dark matter! Essential viewing! @skdh

Dark Matter: The Situation Has Changed
youtu.be/4_qJptwikRc

Nov 27, 2021
Ask Ethan: Could axions be the solution to the dark matter puzzle? Most of the matter in our Universe isn’t made of any of the particles in the Standard Model. Could the axion save the day?
link.medium.com/JXlqPx3Pwlb