Martín-Olalla, José María
martin-olallajm.bsky.social
Martín-Olalla, José María
@martin-olallajm.bsky.social
Thinking out of the box on seasonal daylight saving time. It is latitude.

https://zenodo.org/communities/dst/records?q=&l=list&p=1&s=10&sort=publication-desc
Reposted by Martín-Olalla, José María
Physica Scripta (IOP Pub) releases my work linking the vanishing of the specific heats at absolute zero with the principle of entropy increase. doi.org/10.1088/1402... It continues my previous work on Nernst theorem and completes a revision of the 3rd law of thermodynamics.🆕🧵⤵️
December 11, 2025 at 6:59 AM
Physica Scripta (IOP Pub) releases my work linking the vanishing of the specific heats at absolute zero with the principle of entropy increase. doi.org/10.1088/1402... It continues my previous work on Nernst theorem and completes a revision of the 3rd law of thermodynamics.🆕🧵⤵️
December 11, 2025 at 6:59 AM
Publico en Phys Scrp (IOP Pub) un artículo que vincula la anulación de los calores específicos en T=0 con el principio de aumento de entropía. doi.org/10.1088/1402...

Es una secuela del artículo sobre el teorema de Nernst. Completa la revisión de 3er ppo de la termodinámica.🆕🧵⤵️
December 9, 2025 at 4:25 PM
Hace días charlé (una hora) con Horacio Pérez Sánchez sobre el 3er principio de la termodinámica y el teorema de Nernst para su podcast Investigando la Investigación. link.springer.com/article/10.1...

Aquí el vídeo: youtu.be/5m7nwG1ihXw?...

@unisevilla.bsky.social @fisicaus.bsky.social
Proof of the Nernst theorem - The European Physical Journal Plus
The Nernst heat theorem is proven from purely thermodynamic arguments connected with the second law of thermodynamics. The proof stipulates that $$T=0$$ T = 0 is formalized by a Carnot thermometer, an...
link.springer.com
September 15, 2025 at 10:20 AM
Reposted by Martín-Olalla, José María
#DivulgaUS El científico y divulgador ‪@ccuanticos.bsky.social‬ entrevista al profesor de la @unisevilla.bsky.social José María Martín Olalla

💡 AVISO A NAVEGANTES Aún hay mucho que decir sobre de la Termodinámica

www.youtube.com/watch?v=piz9...

@fisicaus.bsky.social
120 Años bajo la sombra de Einstein: Entrevista al Profesor José María Martín Olalla.
YouTube video by CUENTOS CUÁNTICOS
www.youtube.com
July 3, 2025 at 7:04 AM
Esta mañana hablé largo (2 horas) con Cuentos Cuánticos sobre termodinámica y el teorema de Nernst. @unisevilla.bsky.social @fisicaus.bsky.social El resultado fue este youtu.be/piz9v9Rrk98?...
120 Años bajo la sombra de Einstein: Entrevista al Profesor José María Martín Olalla.
YouTube video by CUENTOS CUÁNTICOS
youtu.be
June 30, 2025 at 2:49 PM
Reposted by Martín-Olalla, José María
A new theoretical analysis directly links Nernst's theorem to the second law of thermodynamics, correcting a longstanding interpretation and clarifying the inaccessibility of absolute zero. doi.org/g9qkq3
Thermodynamics revisited: Study solves 120-year-old problem and corrects one of Einstein's ideas
Nernst's theorem—a general experimental observation presented in 1905 that entropy exchanges tend to zero when the temperature tends to zero—has been directly linked to the second principle of thermodynamics in a paper published in The European Physical Journal Plus, whose sole author is University of Seville professor José Martín-Olalla.
phys.org
June 17, 2025 at 8:57 PM
"Someone is wrong in internet" (xkcd). What if textbooks are wrong? What if the mistake originated in one Einstein's idea? Come and see a 120-year late "Proof of the Nernst theorem" now published at @springernature.com

doi.org/10.1140/epjp...

cc @johncarlosbaez.mathstodon.xyz.ap.brid.gy
Proof of the Nernst theorem - The European Physical Journal Plus
The Nernst heat theorem is proven from purely thermodynamic arguments connected with the second law of thermodynamics. The proof stipulates that $$T=0$$ T = 0 is formalized by a Carnot thermometer, an...
doi.org
June 17, 2025 at 6:45 PM
"Alguien está equivocado en internet" (xkcd). ¿Qué pasa cuando lo equivocado son los libros, y el error proviene de un argumento de Einstein? Acompáñeme en la demostración del teorema de Nernst (tercer principio de la termodinámica).

🆕🧵⬇️
June 17, 2025 at 10:52 AM
Reposted by Martín-Olalla, José María
Last week there was a hearing on DST regulations at US Senate @senatepress.bsky.social

@martin-olallajm.bsky.social and me have a quite clear position about this, and we commented it with Leonardo Pini @medillschool.bsky.social

Here it is:
www.upi.com/Top_News/US/...
Senate debates whether it's time to stop changing the clock twice a year - UPI.com
For years, Congress has tried to put a lock on the clock, get rid of seasonal time change and decide whether to make daylight saving time or standard time permanent. A Senate committee hearing Thursda...
www.upi.com
April 14, 2025 at 11:47 AM
Daily rhythms Spain vs 14 European countries as per Hetus round 1 (Eurostat)

Commuting, household work, sleep/wake, meals, work, free time, TV watching.

98 plots.

Published in 2018 now available in Zenodo

doi.org/10.5281/zeno...
Daily rhythms in Spain vs countries in the Harmonized European Time Use Survey round 1
A series of 98 plots comparing the daily rhythm of life in Spain vs the countries that reported time use surveys to HETUS round 1. File name code: XXES_[string]_01_eng.png XX iso 3166-1 alpha 2 code o...
doi.org
April 7, 2025 at 5:35 PM
O pasado venres 28, o programa A crónica de
@G24Noticias tivo a ben entrevistarme a conta do noso traballo sobre o cambio de hora. Aquí poden escoitar o resultado. @royalsocietypublishing.org @jorgemirausc.bsky.social @unisevilla.bsky.social @fisicaus.bsky.social doi.org/10.5281/zeno...
A Cronica 19: cambio de hora
Intervención en el programa de A Crónica de A Galega el viernes 28 de marzo del 2025 a cuentas del cambio estacional de la hora oficial. Entrada en directo a las 20:24.
doi.org
March 31, 2025 at 5:46 PM
El pasado viernes 28 Rocío Buitrago de @canalsurnoticias.bsky.social
tuvo a bien grabar unas declaraciones mías que se emitieron en la pieza sobre el cambio de hora. Aquí está el resultado: armario de verano/armario de invierno youtu.be/iYUZF8ubR2I @unisevilla.bsky.social @fisicaus.bsky.social
Cambio de hora primavera 2025: armario de invierno/armario de verano
YouTube video by José María Martín-Olalla
youtu.be
March 31, 2025 at 5:36 PM
Analizando la mejor hora para empezar el día. Una evaluación del cambio de hora. La lectura del día.
1. Introducción
2. Para qué el cambio de hora.
3. ¿Son peligrosos los días de cambio?
4. Eligiendo las fechas.
5. ¿El cambio de hora nos desubica? (sigue)

doi.org/10.1098/rsos...
Assessing the best hour to start the day: an appraisal of seasonal daylight saving time | Royal Society Open Science
We provide an evidence-based position on the seasonal regulation of clocks daylight saving time (DST) that challenges position papers by sleep associations against the practice. We review the acute, s...
doi.org
March 30, 2025 at 6:58 PM
Reposted by Martín-Olalla, José María
Wir haben die Verbindung zwischen saisonalen Uhrenregelungen und der menschlichen Physiologie (photorezeptive Mechanismen) erneut aufgegriffen und die moderne Kritik an den Vorschriften in einen Kontext gestellt. I
royalsocietypublishing.org/doi/10.1098/...
Assessing the best hour to start the day: an appraisal of seasonal daylight saving time | Royal Society Open Science
We provide an evidence-based position on the seasonal regulation of clocks daylight saving time (DST) that challenges position papers by sleep associations against the practice. We review the acute, short-term impact and the chronic, long-term impact of ...
royalsocietypublishing.org
March 30, 2025 at 9:14 AM
Reposted by Martín-Olalla, José María
🕰️ Should we still change the clocks?

A new paper argues seasonal clock changes help align wake times with sunrise – especially in higher latitudes – and that the short-term harms are smaller than often claimed.

🔗 doi.org/10.1098/rsos...

#SciComm #DST #CircadianRhythms 🧪
Assessing the best hour to start the day: an appraisal of seasonal daylight saving time | Royal Society Open Science
We provide an evidence-based position on the seasonal regulation of clocks daylight saving time (DST) that challenges position papers by sleep associations against the practice. We review the acute, s...
doi.org
March 30, 2025 at 8:42 AM
Laura Cascajosa tuvo a la amabildad de entrevistarme en Cope Sevilla a cuenta de mis trabajos sobre el cambio estacional de la hora. Aquí pueden oír el resultado. (siguen posts con enlaces a los artículos y créditos)

www.cope.es/emisoras/and...
HERRERA EN COPE EN SEVILLA | 27 MAR 2025 | 12:50H
La actualidad de Sevilla.
www.cope.es
March 29, 2025 at 5:53 PM
Reposted by Martín-Olalla, José María
#RSOS in @science.org | Assessing the best hour to start the day: an appraisal of seasonal daylight saving time: royalsocietypublishing.org/doi/10.1098/...
www.science.org
March 29, 2025 at 10:00 AM
Esta mañana intervine en el Canal 24 horas. Aquí un extracto. En el siguiente post la intervención completa. @unisevilla.bsky.social @fisicaus.bsky.social
La UE votó en 2019 dejar de cambiar la hora en 2021, pero los estados han pospuesto su eliminación.

El #Canal24Horas habla con María de los Ángeles Rol, catedrática de Cronobiología UMU y el físico Jose María Martín.

www.rtve.es/noticias/202...
March 29, 2025 at 12:40 PM
Vielen Dank an LisaMuckelberg für das freundliche Interview zur Zeitumstellung! Hier ist das Ergebnis auf Deutschlandfunk Die zugehörige Studie findet sich unter folgendem post

www.deutschlandfunk.de/spanische-st...
Spanische Studie plädiert für kürzere Sommerzeit erst ab April
www.deutschlandfunk.de
March 28, 2025 at 7:00 PM
Our latest contribution "What preset schedules will be? Rethinkink Daylight Saving Time" now published in Time and Society (Sage)

We may agree that 'adapting to the varying morning brightness levels' sounds very different from 'altering sunrise and sunset times'. Link in following posts.
March 27, 2025 at 6:02 PM
What a week.
March 27, 2025 at 3:15 PM
SciMag highlights our last paper on seasonal Daylight Saving Time in @royalsocietypublishing.org . Glad to contribute to this debate from a novel, social, thought-provinking perspective. @jorgemirausc.bsky.social Study link on the next post.
March 25, 2025 at 7:05 PM
Reposted by Martín-Olalla, José María
A new paper says seasonal clock changes help align human activity with the sunrise, but the practice is associated with numerous health risks. scim.ag/41T6llQ
Does daylight saving time make sense? Scientists debate pros and cons
A new paper says seasonal clock changes help align human activity with the sunrise, but the practice is associated with numerous health risks
scim.ag
March 24, 2025 at 5:17 PM