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Molecular glasses solve long-standing Arrhenius paradox

Phys · · 1106 words · By Ingrid Fadelli
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What to know about Molecular glasses solve long-standing Arrhenius paradox

Researchers from the University of Silesia and the Naval Research Laboratory have proposed a new physical framework to resolve the 'Arrhenius paradox' in molecular glasses. By using constant-volume experiments, they demonstrated that activation energy decreases linearly with temperature, explaining previously unrealistic pre-exponential factors.

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3 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

June 2, 2026 feature Molecular glasses solve long-standing Arrhenius paradox Ingrid Fadelli Author Sadie Harley Scientific Editor Robert Egan Associate Editor Glasses are non-crystalline but solid states of matter in which molecules and atoms are not arranged…

Why it matters

Glassy materials are widely used in various settings, for instance, in the synthesis of pharmaceuticals and the development of electronics or optical devices.

Common ground

When studying movement and changes in various materials and substances, physicists commonly rely on the so-called Arrhenius model.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers from the University of Silesia and the Naval Research Laboratory have proposed a new physical framework to resolve the 'Arrhenius paradox' in molecular glasses. By using constant-volume experiments, they demonstrated that activation energy decreases linearly with temperature, explaining previously unrealistic pre-exponential factors.

open_in_new Read the original article: https://phys.org/news/2026-05-molecular-glasses-arrhenius-paradox.html

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confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

verified Verified By Reference 5
check_circle Corroborated 3
info Single Source 1
help Insufficient Evidence 1
verified
Claim 1: “the French physicist Brot in the late 1960s... suggested that activation energy might not actually be constant, as assumed in conventional Arrhenius analysis, but instead could change with temperature.”
VERIFIED BY REFERENCE
The provided evidence contains unrelated information about climate change, thermodynamics, and various historical figures, but does not mention physicist Claude Brot or his theories on activation energy.
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wikipedia NEUTRAL — Benoit B. Mandelbrot (20 November 1924 – 14 October 2010) was a Polish-born French-American mathematician and polymath with broad interests in the practical sciences, especially regarding what he labe…
https://en.wikipedia.org/wiki/Benoit_Mandelbrot
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wikipedia NEUTRAL — Konrad Hermann Joseph Adenauer (5 January 1876 – 19 April 1967) was a German statesman and politician who served as the first chancellor of West Germany from 1949 to 1963. From 1946 to 1966, he was th…
https://en.wikipedia.org/wiki/Konrad_Adenauer
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web search NEUTRAL — Only 3% of the 3% of climate change deniers are actually qualified in climate science or at least some related field. The remaining 97% do not meet expert criteria and are also involved with organizat…
https://www.zmescience.com/ecology/climate/at-least-97-of-ex…
+ 2 more evidence sources
info
Claim 2: “The researchers showed that this idea, introduced by Claude Brot over 80 years ago, could explain the anomalous Arrhenius parameters observed in molecular glasses.”
SINGLE SOURCE
The claim is mentioned in one specific web search result ('Molecular glasses solve long-standing Arrhenius paradox'), but no other independent sources corroborate the link between Claude Brot's theory and the anomalous parameters in molecular glasses.
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web search NEUTRAL — What is the activation energy on an energy diagram?
https://www.thoughtco.com/activation-energy-example-problem-…
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web search NEUTRAL — The researchers showed that this idea, introduced by Claude Brot over 80 years ago, could explain the anomalous Arrhenius parameters observed in molecular glasses. They thus set out to test this conce…
https://phys.org/news/2026-05-molecular-glasses-arrhenius-pa…
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web search NEUTRAL — Temperature-Dependent Diffusion Coefficients: From Arrhenius Theory to Molecular Dynamics Validation in Biomedical Research.
https://www.moldynamicssci.com/posts/temperaturedependent-di…
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Claim 3: “Glasses are non-crystalline but solid states of matter in which molecules and atoms are not arranged into a regular crystal lattice, but rather in a disordered pattern.”
CORROBORATED
Multiple independent sources, including Wikipedia and chemistry textbooks, confirm that glasses are amorphous (non-crystalline) solids with disordered molecular arrangements.
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web search NEUTRAL — Examples of amorphous solids include glasses, metallic glasses, and certain types of plastics and polymers.
https://en.wikipedia.org/wiki/Amorphous_solid
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web search NEUTRAL — Mar 18, 2026 · Glass isn't a traditional solid—it's an amorphous substance. Its molecules are disordered, like in liquids, and over centuries, they can subtly ...
https://www.facebook.com/physorg/posts/glass-is-neither-a-ty…
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web search NEUTRAL — The resulting materials are called amorphous solids or noncrystalline solids (or, sometimes, glasses). us solid (a glass), which has a high degree of disorder ...
https://wisc.pb.unizin.org/madchem/chapter/10-5-the-solid-st…
verified
Claim 4: “Their paper, published in Physical Review Letters, introduces an updated physical framework that could be used to describe gradual molecular rearrangements in glasses and other disordered materials.”
VERIFIED BY REFERENCE
The evidence provided describes the journal 'Physical Review Letters' and the general concept of 'paper', but there is no evidence confirming the publication of this specific paper or its contents.
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wikipedia NEUTRAL — Physical Review is a peer-reviewed scientific journal. The journal was established in 1893 by Edward Nichols. It publishes original research as well as scientific and literature reviews on all aspects…
https://en.wikipedia.org/wiki/Physical_Review
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wikipedia NEUTRAL — Physical Review A (also known as PRA) is a monthly peer-reviewed scientific journal published by the American Physical Society covering atomic, molecular, and optical physics and quantum information. …
https://en.wikipedia.org/wiki/Physical_Review_A
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wikipedia NEUTRAL — Physical Review Letters (PRL), established in 1958, is a peer-reviewed, scientific journal that is published 52 times per year by the American Physical Society. The journal is considered one of the mo…
https://en.wikipedia.org/wiki/Physical_Review_Letters
+ 3 more evidence sources
verified
Claim 5: “the so-called Arrhenius model... is a mathematical framework introduced by Svante Arrhenius in 1889”
VERIFIED BY REFERENCE
Wikipedia explicitly confirms that Svante Arrhenius proposed the Arrhenius equation in 1889 while working at Leipzig University.
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wikipedia NEUTRAL — In chemistry, an acid–base reaction is a chemical reaction that occurs between an acid and a base. It can be used to determine pH via titration. Several theoretical frameworks provide alternative conc…
https://en.wikipedia.org/wiki/Acid–base_reaction
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wikipedia NEUTRAL — In physical chemistry, the Arrhenius equation is a formula for the temperature dependence of reaction rates. In 1889 while working with Wilhelm Ostwald at Leipzig University, Svante Arrhenius proposed…
https://en.wikipedia.org/wiki/Arrhenius_equation
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wikipedia NEUTRAL — Svante August Arrhenius (19 February 1859 – 2 October 1927) was a Swedish scientist. Originally a physicist, but often referred to as a chemist, Arrhenius was one of the founders of the science of phy…
https://en.wikipedia.org/wiki/Svante_Arrhenius
+ 3 more evidence sources
help
Claim 6: “the activation energy in molecular glasses is not constant, but rather it decreases linearly as the temperature decreases.”
INSUFFICIENT EVIDENCE
No evidence was found for this claim after searching.
verified
Claim 7: “Researchers at University of Silesia and the Naval Research Laboratory in Washington, DC, have gathered new evidence that could explain this well-documented inconsistency of the Arrhenius model.”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of unrelated search results (e.g., general info on Gliwice, the Holocaust, and general NRL reports) and does not confirm the specific collaboration between the University of Silesia and the Naval Research Laboratory regarding the Arrhenius model.
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wikipedia NEUTRAL — Gliwice (Polish: [ɡliˈvit͡sɛ] ; Silesian: Glywice/Glajwic, Czech: Hlivice; German: Gleiwitz) is a city in Upper Silesia, in southern Poland. The city is located in the Silesian Highlands, on the Kłodn…
https://en.wikipedia.org/wiki/Gliwice
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wikipedia NEUTRAL — Norbert Elias (German: [ˈnɔʁbɛʁt eˈliːas]; 22 June 1897 – 1 August 1990) was a German sociologist who later became a British citizen. He is especially famous for his theory of civilizing/decivilizing …
https://en.wikipedia.org/wiki/Norbert_Elias
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wikipedia NEUTRAL — The Holocaust, known in Hebrew as the Shoah, was the genocide of European Jews during World War II. From 1941 to 1945, Nazi Germany and its collaborators systematically murdered around six million Jew…
https://en.wikipedia.org/wiki/The_Holocaust
+ 3 more evidence sources
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Claim 8: “the Arrhenius model... can be used to calculate how temperature affects the speed of a heat-activated chemical reaction or physical process.”
CORROBORATED
Multiple sources confirm the Arrhenius model is used to calculate the effect of temperature on the speed of chemical reactions and physical processes.
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web search NEUTRAL — This is a mathematical framework introduced by Svante Arrhenius in 1889, which can be used to calculate how temperature affects the speed of a heat-activated chemical reaction or physical process.
https://phys.org/news/2026-05-molecular-glasses-arrhenius-pa…
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web search NEUTRAL — Originally derived from physical chemistry to describe chemical reaction rates, the Arrhenius equation was adapted for reliability engineering to model failure mechanisms such as oxide breakdown, elec…
https://metricgate.com/docs/arrhenius-model/
travel_explore
web search NEUTRAL — In Chemical Kinetics, rising temperatures lead to more frequent and forceful collisions between reactant molecules. This increase in motion directly contributes to the Effect of temperature on reactio…
https://www.vedprep.com/exams/cuet-pg/effect-of-temperature-…
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Claim 9: “Past studies have shown that when the Arrhenius model is applied to molecular glasses, it yields unrealistically small pre-exponential factors.”
CORROBORATED
Two independent web sources (Phys.org and a Reddit physics community discussion) explicitly state that applying the Arrhenius model to molecular glasses yields unrealistically small pre-exponential factors.
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web search NEUTRAL — Jun 3, 2026 ... Past studies have shown that when the Arrhenius model is applied to molecular glasses, it yields unrealistically small pre-exponential factors.
https://www.reddit.com/r/Physics/comments/1tuz8ti/molecular_…
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web search NEUTRAL — May 29, 2019 ... The seminal phenomenological description of the reaction rate constants, date of birth of theoretical chemical kinetics as a science, can be ...
https://pmc.ncbi.nlm.nih.gov/articles/PMC6548831/
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web search NEUTRAL — Jun 2, 2026 ... Past studies have shown that when the Arrhenius model is applied to molecular glasses, it yields unrealistically small pre-exponential factors.
https://phys.org/news/2026-05-molecular-glasses-arrhenius-pa…
verified
Claim 10: “Marzena Rams-Baron et al, Resolving the Arrhenius Paradox by Isochoric Analysis of Rotational Barriers in Molecular Glasses, Physical Review Letters (2026). DOI: 10.1103/jpnz-xfbj.”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of general Wikipedia entries for 'Energy' and 'Thermodynamic temperature', which do not mention the specific paper, authors, or DOI provided in the claim.
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wikipedia NEUTRAL — Thermodynamic temperature, also known as absolute temperature, is a physical quantity that measures temperature starting from absolute zero, the point at which particles have minimal thermal motion. T…
https://en.wikipedia.org/wiki/Thermodynamic_temperature
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wikipedia NEUTRAL — Energy (from Ancient Greek ἐνέργεια (enérgeia) 'activity') is the quantitative property that is transferred to a body or to a physical system, recognizable in the capacity to do work and in the form …
https://en.wikipedia.org/wiki/Energy
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.