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#gravity

4 messages4 participants0 message aujourd’hui
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Mute Dog Brewing

The hoppy IPA-ish beer I brewed (nearly) 2 weeks ago seems to be done fermenting at 1.008 (temp corrected) making it 7.5% abv.

It tastes pretty good, has a nice bitterness on the higher side for my palate but not too painful. Aroma is tropical/pineapple. It definitely needs a dry hop to bring it to where I want it to be, but overall, I think it's turned out well so far. I wish it wasn't as dry as it is, but it's not wrecking the beer by any means.

A close up photo of a hydrometer floating in a sample of beer, showing the Specific Gravity to be 1.006. The reason I wrote 1.008 in my post is because the beer temp was higher (75F) than the calibration temp for the hydrometer (60F) if the beer had been the correct temp the hydrometer would be floating at 1.008
#HomeBrewing#Beer#Gravity
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Flipboard Science Desk

Gravity is one of the basic forces of nature that keeps the universe stitched together. Right? But, writes Melvin Vopson, suppose the law of gravity “is simply an echo of something more fundamental: a byproduct of the universe operating under a computer-like code.” It’s a scary thought, but the associate professor of physics explores it in this article for @TheConversationUS:

flip.it/FctFqk

The ConversationCould gravity be evidence that the universe is a computer simulation? My new study suggests why this might be so
Plus via The Conversation UK
#Science#Space#Universe
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Mikko Tuomi

At long last, a unified theory combining #gravity with the other fundamental forces—electromagnetism and the strong and weak nuclear forces—is within reach.

Bringing gravity into the fold has been the goal of generations of physicists, who have struggled to reconcile the incompatibility of two cornerstones of modern physics: #quantum field theory and Einstein’s theory of gravity.

Researchers at Aalto University have developed a new quantum theory of gravity which describes gravity in a way that’s compatible with the Standard Model of particle physics, opening the door to an improved understanding of how the #universe began.

#physics #cosmology
aalto.fi/en/news/new-theory-of

www.aalto.fiNew theory of gravity brings long-sought Theory of Everything a crucial step closer | Aalto UniversityA quantum theory of gravity would clear the path to answering some of the biggest questions in physics.
Suite du fil
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Spaceflight 🚀

If the #cost of launching and operating a #SpaceStation drops 📉 sufficiently, it will become feasible to conduct a number of industrial processes in #orbit. We are not talking about specific experiments here, but of #serial production processes conducted at scale. Some specialized industrial processes can be done more efficiently in space 🌌, because of the absence of #gravity, particularly some #biotech applications with tangible applications on Earth aerotime.aero/articles/how-sta

AeroTime · Starlab Space Swiss partnership to launch next space statio - AeroTimeHow Starlab Space partnered with Swiss research institutions to develop the next generation of commercial space stations
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Spaceflight 🚀

A researcher at a Scottish 🏴󠁧󠁢󠁳󠁣󠁴󠁿 university has created technology which will pave the way for #orbital 🌌 factories which can #3Dprint components on demand in #ZeroGravity scotsman.com/news/the-scottish

Embedded #3Dprinting can "solve the challenge of #gravity-induced deformation" of printed structures nature.com/articles/s41467-025

#InSpaceManufacturing#SpaceIndustry
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Dr. Miguel Montargès 🔭✨📡

Cette semaine, nous testions l'optique adaptative de l'instrument #GRAVITY+ de l'interféromètre du #VLT (#VLTI). Avant l'installation des étoiles laser sur les télescopes unitaires 1, 2 et 3, nous avons qualifié le système avec le télescope 4, équipé d'étoiles lasers depuis des années pour d'autres instruments.

J'étais au QG de l'@esoastronomy en Allemagne, mais Anthony Berdeu était sur place et a pu capturer la magie de la #Lune dans le désert d'#Atacama.

Lever de la Lune derrière l'ELT, le télescope européen géant de 39m de diamètre en construction sur le Cerro Armazones par l'ESO. La photo est prise par Anthony Berdeu depuis le VLT à 21km de distance.
Fin de l'éclipse totale de Lune du 14 mars 2025, avec un des lasers d'UT4 au premier plan. Crédits: Anthony Berdeu.
La fin de l'éclipse totale de Lune vue par Anthony Berdeu.
Coucher de Lune sur la mer de nuage au petit matin. L'ombre du Cerro Paranal qui héberge le VLT se projette sur l'atmosphère terrestre. Crédits: Anthony Berdeu.
Suite du fil
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rexi

(Second issue was *not* delayed by federal firings, but it might as well have been. Intentionally confusing and vague wording is my way of pointing to the disinformation fog machine at the head of world's biggest #research funder.)

This month's imaginary cover highlights Bianconi's new bombshell in Physical Review D, which proposes a new framework that could revolutionize our understanding of #gravity and its relationship with #quantummechanics.

Science Underground fake magazine cover New Physics, New Politics Information Entanglement Dark Forces Matter Phys. Rev. D 111, 066001 – Published 3 March, 2025 Gravity is derived from an entropic action coupling matter fields with geometry. The fundamental idea is to relate the metric of Lorentzian spacetime to a quantum operator, playing the role of an renormalizable effective density matrix and to describe the matter fields topologically…While the geometry of spacetime is defined by its metric, the matter fields can be used to define an alternative metric, the metric induced by the matter fields, which geometrically describes the interplay between spacetime and matter. The proposed entropic action is the quantum relative entropy between the metric of spacetime and the metric induced by the matter fields. The modified Einstein equations obtained from this action reduce to the Einstein equations with zero cosmological constant in the regime of low coupling. By introducing the G-field, which acts as a set of Lagrangian multipliers, the proposed entropic action reduces to a dressed Einstein-Hilbert action with an emergent small and positive cosmological constant only dependent on the G-field. The obtained equations of modified gravity remain second order in the metric and in the G-field. A canonical quantization of this field theory could bring new insights into quantum gravity while further research might clarify the role that the G-field could have for dark matter.
#science#ScienceUnderground
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