iiinova — where your digital self keeps evolving

full frontal lobe @ratfan.bsky.social · 30/09/2026

I want a t-shirt in the style of the 'bears, beets, battle star Galactica' one that says Hilbert, Hermite, Hamilton

full frontal lobe @ratfan.bsky.social · 24/09/2026

Imagine being a physicist in the 1920s trying to figure why electrons seemed to have an extra degree of freedom for which there was no classical analog. So you call it spin because you can picture that. As Tomonaga says it, it involved a lot of groping in the dark. 🧪

Photo of the cover of the book the story of spin by Sin-itiro Tomonaga

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full frontal lobe @ratfan.bsky.social · 23/09/2026

🧪 I've just had a brain wave! Specifically one of the form:

Equation: open square bracket, open parenthesis one over sigma plus one over v times partial derivative with respect to t, close parenthesis squared minus three halves times the Laplacian, close square bracket, acting on Psi, equals one over sigma squared times f superscript o dot Z. doi:10.1152/jn.00406.2019

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full frontal lobe @ratfan.bsky.social · 16/09/2026

Recently discovered that the nazis rejected Einstein's theory of relativity as "Jüdische Physik" and founded their own "Deutsche Physik" which, rejecting relativity, was of course just wrong. 🧪

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full frontal lobe @ratfan.bsky.social · 31/08/2026

Theoretical physicists have a lot of faith in non-commutative algebra 🧪

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full frontal lobe @ratfan.bsky.social · 30/06/2026

Larry David and David Mitchell in David and David

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full frontal lobe @ratfan.bsky.social · 15/05/2026

I bet if you told, say, the ancient Greeks that actually lead is really toxic and then told them we also invented/discovered something way more dangerous called radiation, and then you told them lead protects you from radiation they'd be like OH COME ON

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full frontal lobe @ratfan.bsky.social · 13/05/2026

if you're not heavily in credit card debt to finance your crypto investments, you're a cuck. sorry

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full frontal lobe @ratfan.bsky.social · 23/03/2026

They're transvestigating the chicken from Moana

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full frontal lobe @ratfan.bsky.social · 17/03/2026

Back here after a long hiatus because just as the children crave the mines I apparently crave an unfiltered never ending stream of strangers' opinions

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full frontal lobe @ratfan.bsky.social · 10/04/2025

I'm gonna do some little deep dive threads into the Unruh effect and quantum field theory in general. I want to try convert the maths into words for max accessibility but also try avoid making it sound too vague and fanciful. Probably super easy to do. Anyway follow if this sounds cool to you! 🧪

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full frontal lobe @ratfan.bsky.social · 10/04/2025

Hopefully I don't get sued for reproducing this but it really is one of the most informative bits of text about quantum mechanics I have come across, from Carroll's 'An Introduction to General Relativity'. 🧪

Screenshot of text: "Strictly speaking, quantum mechanics is just different from classical mechanics; it is by no means necessary to start with a classical model and “quantize” it. Nevertheless, we usually do exactly that. Even for simple classical models, there is more than one way to construct a quantized version; these include canonical quantization and path-integral quantization, as well as more exotic procedures. What is worse, there is no simple map between classical and quantum theories; there are classical theories with no well-defined quantum counterpart, classical theories with multiple quantum versions, and quantum theories without any classical analogue"

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full frontal lobe @ratfan.bsky.social · 10/04/2025

"Without understanding the physics, mathematics does not answer your questions. Without understanding the mathematics, your physics theories will not work successfully either, is what we had to discover (and we keep forgetting time and again)." - ’t Hooft arxiv.org/pdf/1503.05007 🧪

arxiv.org

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full frontal lobe @ratfan.bsky.social · 14/03/2025

"I think, therefore the cosmological constant must be very small." - Leonard Susskind in 'The Cosmic Landscape' summing up the Anthropic Principle 🧪

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full frontal lobe @ratfan.bsky.social · 15/02/2025

This spacetime diagram morphing is a mathematical picture of viewing events in spacetime from different inertial frames of reference. Here we see how events that occur simultaneously in one inertial frame (on a line parallel to the x-axis) do not necessarily happen simultaneously in another 🧪

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full frontal lobe @ratfan.bsky.social · 17/02/2025

A nice easy one for Monday from J Hartle's Gravity 🧪

A block of test that reads: A 20-m pole is carried so fast in the direction of its length that it appears to be only 10 m long in the laboratory frame. The runner carries the pole trough the front door of a barn 10 m long. Just at the instant the head of the pole reaches the closed rear door, the front door can be closed, enclosing pole within the 10-m barn for an instant. The rear door opens and the runner goes through. From the runner’s point of view, however, the pole is 20 m long and the barn is only 5 m! Thus the pole can never be enclosed in the barn. Explain, quantitatively and by means of spacetime diagrams, the apparent paradox.

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full frontal lobe @ratfan.bsky.social · 26/02/2025

Particle physics is like, red flimflams emit floopydoops and become gigglepops, blue flimflams emit floopydoops and become red flimflams. Charlie Browns can emit other Charlie Browns and form Charlie chains. Chumbawambas are responsible for the expansion of the universe 🧪

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full frontal lobe @ratfan.bsky.social · 27/02/2025

What I do in public is nobody's business

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full frontal lobe @ratfan.bsky.social · 27/02/2025

In what sense does the Higgs field give particles mass? The standard model of particle physics is actually complete without Higgs, if all the particles moved at the speed of light. But only massless particles can move at light speed 🧪

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full frontal lobe @ratfan.bsky.social · 27/02/2025

Remember to take life 10⁻⁴⁴ seconds at a time 🧪

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full frontal lobe @ratfan.bsky.social · 26/02/2025

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full frontal lobe @ratfan.bsky.social · 21/02/2025

Nothing better than extremely hi-fi overproduced 'lo-fi' music

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full frontal lobe @ratfan.bsky.social · 21/02/2025

Was this written by a 5 year old

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full frontal lobe @ratfan.bsky.social · 18/02/2025

What is the relationship between these two equations of gravitational potential energy we learn in school? I'd tell but I have the flu 🧪

Two equations, the top is gravitational potential energy equals mass times gravitational acceleration constant G times height. Second equation the gravitational potential energy equals minus g times mass-one times mass-two all over R

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full frontal lobe @ratfan.bsky.social · 17/02/2025

Trying to understand new maths concepts in science usually feels like it boils down to 'which numbers do I plug in where and how do I know if the numbers that come out are bigger or smaller than they should be'

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full frontal lobe @ratfan.bsky.social · 17/02/2025

A nice easy one for Monday from J Hartle's Gravity 🧪

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full frontal lobe @ratfan.bsky.social · 15/02/2025

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full frontal lobe @ratfan.bsky.social · 15/02/2025

Maybe she's born with it, maybe it's Alprazolam 🎶

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full frontal lobe @ratfan.bsky.social · 14/02/2025

Because time runs slower as gravity gets stronger, over a 100 year period a person living on the ground floor lives a few microseconds longer than someone on the top floor. 🧪⌛

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full frontal lobe @ratfan.bsky.social · 08/02/2025

Why can't I travel at just 1% lightspeed in this futuristic year of 2025? Then I could travel to the opposite side of the globe in less than 7 seconds. Seriously who wants to run the calculations? 🧪 It would make visiting my parents so much easier.

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full frontal lobe @ratfan.bsky.social · 06/02/2025

If this app wants to be legitimate it needs to find ways to reach more users in Africa, Asia, and South America to name a few regions. At the moment if feels more like a big whatsapp group for US Democrats

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full frontal lobe @ratfan.bsky.social · 13/02/2025

This common image is misleading because gravitational attraction is not caused by objects following a straight line in 3D space, but rather a straight line in 4D spacetime. The image doesn't represent time and therefore neglects time dilation's role in gravity. There's a better picture... 🧪

An illustration of how the mass of an object curves spacetime. We see earth in space atop a mesh grid. The grid is deformed as if a bowling ball were resting on a trampoline.

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full frontal lobe @ratfan.bsky.social · 10/02/2025

🚨Alert🚨 I have come into possession of 𝑉𝑖𝑠𝑢𝑎𝑙 𝐷𝑖𝑓𝑓𝑒𝑟𝑒𝑛𝑡𝑖𝑎𝑙 𝐺𝑒𝑜𝑚𝑒𝑡𝑟𝑦 𝑎𝑛𝑑 𝐹𝑜𝑟𝑚𝑠: 𝐴 𝑀𝑎𝑡ℎ𝑒𝑚𝑎𝑡𝑖𝑐𝑎𝑙 𝐷𝑟𝑎𝑚𝑎 𝑖𝑛 𝐹𝑖𝑣𝑒 𝐴𝑐𝑡𝑠

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full frontal lobe @ratfan.bsky.social · 10/02/2025

The Unruh effect is a prediction in quantum field theory that an accelerating thermometer in empty space without any other contribution to its temperature, will record a non-zero temperature, just from its acceleration, due to quantum vacuum fluctuations. 🧪

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full frontal lobe @ratfan.bsky.social · 10/02/2025

oh nice this is going to be another it's always sunny in philadelphia episode #superbowl

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full frontal lobe @ratfan.bsky.social · 09/02/2025

I stg if one more combination of vector spaces decides to result in another vector space I'm gonna lose it

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full frontal lobe @ratfan.bsky.social · 09/02/2025

'Think about them as carnivore animals (double dual vectors) eating herbivore animals (dual vectors) eating plants (vectors), while at the same time they both produce feces (real numbers).' Hm. Source ekamperi.github.io/mathematics/... 🧪

ekamperi.github.io

Dual spaces, dual vectors and dual basis

Definitions and examples of dual spaces, dual vectors and dual basis, along with some insights.

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full frontal lobe @ratfan.bsky.social · 08/02/2025

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full frontal lobe @ratfan.bsky.social · 08/02/2025

how do we all feel about trying to understand math notation that crams a lot of info into very compact notation and proceeds to write it like a language. we love it right?

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full frontal lobe @ratfan.bsky.social · 07/02/2025

I skeet so that my friends don't need to listen to all my bullshit

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full frontal lobe @ratfan.bsky.social · 07/02/2025

Can't sleep anyone wanna knock me unconscious

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