Salva Bará

8 Followers
217 Following
558 Posts
Light pollution researcher. Former profesor titular de Óptica (retired) at Universidade de Santiago de Compostela, Galicia (European Union). More info: https://salvabara.blogspot.com/

🚫 NON Á CENSURA. A CIG-Ensino chama a protestar nos centros contra a inxerencia política da Xunta

💪 O sindicato exixe a retirada das instrucións aínda non remitidas aos centros e a súa negociación na Mesa Sectorial.

🛜 https://www.cig-ensino.gal/nova/non-a-censura-a-cig-ensino-chama-a-protestar-nos-centros-contra-a-inxerencia-politica-da-xunta.html

Academic publishing needs a radical rethink—and we’re hosting a conversation on how to get there.

Björn Brembs @brembs will explore the roadmap toward a community-governed, open infrastructure for scholarly communication.

Don't miss it!
🔗 https://us02web.zoom.us/meeting/register/_q0pigTgS6iMuilivfcSkw#/registration

Un rayo corriendo entre las nubes. Hace un ratito en Valladolid. Vídeo a cámara lenta.

Is it your imagination, or are car #headlights getting brighter?

@salvabara scoured the web and crunched the numbers to make this graph. It shows that car headlights on average have gotten quite a bit brighter in the last decade, and that the rate of increase is higher for low beams than for high beams.

Preprint here: https://zenodo.org/records/15565958

Related news: some headlight manufacturers are intentionally selling "brighter than allowed" headlights by engineering dark spots where the sensors that check for glare are used: https://www.theringer.com/2024/12/03/tech/headlight-brightness-cars-accidents?lid=dpe6tiyd81ev

This is part and parcel with the vehicle size issue in the US, where the general principle seems to be "my car should be the biggest and the brightest". But while cars get bigger and brighter, deaths from collisions are rising - how shocking...

#LightPollution #Safety #RoadSafety

"(...) We argue, that science should never again become involved in the preparation of war, and take seriously the lessons from World War II, lessons which led to the foundation of CERN and the Science4Peace idea."

Altmann et al. Science for Peace and the need for...
https://arxiv.org/abs/2505.22476

Science for Peace and the need for Civil Clauses at universities and civilian research institutions

After the end of World War II, the commitment to confine scientific activities in universities and research institutions to peaceful and civilian purposes has entered, in the form of {\it Civil Clauses}, the charters of many research institutions and universities. In the wake of recent world events, the relevance and scope of such Civil Clauses has been questioned in reports issued by some governments and by the EU Commission, a development that opens the door to a possible blurring of the distinction between peaceful and military research. This paper documents the reflections stimulated by a panel discussion on this issue recently organized by the Science4Peace Forum. We review the adoptions of Civil Clauses in research organizations and institutions in various countries, present evidence of the challenges that are emerging to such Civil Clauses, and collect arguments in favour of maintaining the purely civilian and peaceful focus of public (non-military) research.

arXiv.org
Riley Gaines Slams Kermit The Frog Grad Speech: VIDEO

Someone clearly didn't watch enough Sesame Street growing up.

Comic Sands
A short report and some thoughts on Light pollution regulations in the kingdom of Spain: challenges and perspectives, available in Zenodo (open access)
https://doi.org/10.5281/zenodo.15400020
Light pollution regulations in the kingdom of Spain: challenges and perspectives

Written contribution to the PLAN-B online policy workshop "Light Pollution Regulations in Practice: Challenges and Perspectives", 21 May 2025.

Zenodo

Je devrais écrire un nouveau billet de blogue la série : Non, on n'a pas trouvé d'extraterrestres.

Possible sign of life in deep space faces new doubts https://phys.org/news/2025-05-life-deep-space.html

Possible sign of life in deep space faces new doubts

In April, scientists captured global attention by announcing they'd found a molecule in a faraway planet's atmosphere that could signal life there.

Phys.org

Very bad news for world peace, and also for the sustainability of the space surrounding the Earth.

https://www.lockheedmartin.com/en-us/capabilities/missile-defense/golden-dome-missile-defense.html

Golden Dome for America

Golden Dome for America is a revolutionary concept to further the goals of peace through strength and President Trump’s vision for deterring adversaries from attacks on the homeland.

Lockheed Martin