Joan Carles Carles

Enginyer industrial i MBA per I'IESE, casat amb la Mercè i pare de 2 filles, enamorat de les muntanyes i apassionat de la ciència i tecnologia. I ❤ Pallars.

[Joan Carles Carles @jccarles]

Fa tres anys vàrem veure un fenòmen geològic sorprenent del #pallarssobira les pàtines blanques del riu de Broate. En la revista Àrnica, recentment editada, s'explica un fenòmen similar (ho podeu confirmar) al riu de Baiau. @visitpallars @pnaltpirineu @meteopallars @Vallsdaneu

[Joan Carles Carles @jccarles]

@lionelpla @SeveZubiri Gràcies per compartir aquestes reflexions i vivències amb els teus amics iranians.

[Joan Carles Carles @jccarles]

@albertcuesta Vodafone i Sabadell

[Joan Carles Carles @jccarles]

Jules Verne El precursor dels viatges a la Lluna, article de @brionesci

[Diario de Burgos @diariodeburgos]

OPINIÓN| "Ojalá esa astronauta fuera europea, concretamente de León, y se llamara Sara García Alonso (@Astro_SaraG)"-'De la Tierra a la Luna', por @brionesci, en #Entrecienciasyletras https://t.co/EGfxT2nPH2

[Joan Carles Carles @jccarles]

Exelent xerrada ahir amb la Sílvia Vidal. Gràcies Meritxell, per la proposta.

[NaturaLlibres @Naturallibres]

L’alta muntanya és l’hàbitat natural de Sílvia Vidal. Per viure, el seu organisme necessita grans parets verticals, biòtops remots, allunyats del congènere humà. Per això ha estat tot un privilegi tenir-la avui aquí a baix. Obrim fil-resum d’aquestes #TrobadesNL a #NaturaLlibres!

[The Nobel Prize @NobelPrize]

On this day 100 years ago physics laureate Werner Heisenberg submitted a paper that revolutionised quantum mechanics.

Heisenberg was only 23 years old when he submitted the paper "Quantum mechanical reinterpretation of kinematic and mechanical relations". For this theory and the applications of it which resulted especially in the discovery of allotropic forms of hydrogen, Heisenberg was awarded the Nobel Prize in Physics for 1932.

His new theory was based only on what can be observed, that is to say, on the radiation emitted by the atom. We cannot, he said, always assign to an electron a position in space at a given time, nor follow it in its orbit, so that we cannot assume that the planetary orbits postulated by Niels Bohr actually exist. Mechanical quantities, such as position or velocity should be represented, not by ordinary numbers, but by abstract mathematical structures called “matrices” and he formulated his new theory in terms of matrix equations.

Learn more about Heisenberg's work in his Nobel Prize lecture: https://t.co/5QRdnhbX2L

[Joan Carles Carles @jccarles]

En trànsit al aeroport Dulles de Washington escoltant el darrer episodi de les cròniques americanes de @fgarriga @som3cat Trobarem a faltar els teus podcast https://t.co/Mh8Ua0Lhjw

[Joan Carles Carles @jccarles]

@fgarriga Felicitats Francesc et seguirem per les Tardes de CatRadio, però trobarem a faltar els teus podcast de Followgarriga. 🇺🇲

[Joan Carles Carles @jccarles]

@dealvarosanz Estem de viatge per 🇺🇲 i ens va ser impossible venir i encara no l'hem pogut veure complert. Però el que hem pogut veure ens ha agradat doncs és un testimoniatge i agraïment que calia fer als Herois de Vandellòs 1 @som3cat @MinoriaAB

[Joan Carles Carles @jccarles]

En relació al programa del Toni Clapés de @versiorac1 en què entrevistava a Alfredo García @OperadorNuclear sobre el documental els Herois de Vandellòs 1 de @som3cat voldria precisar el següent: 1) la temperatura de 310 no era important per al combustible però si per als sistema

[Joan Carles Carles @jccarles]

d'aquest accident pel tipo de disseny del reactor ( major inèrcia tèrmica i diferent tipus de combustible i refrigerant) no hagués estat de la importància de Chernobil.
Espero que aquestes aclaracions us siguin de interès

[Joan Carles Carles @jccarles]

parada la situació hagués evolucionat cap un accident nuclear greu (categoria 4 o 5 segons la OIEA) amb alliberament de productes radioactius al exterior i que en funció de la força i direcció del vent hagués tingut un impacte més petit o gran en la població 8)l'impacte ambiental

[Joan Carles Carles @jccarles]

Una cita molt adient al que estem vivint #blackout #blackoutspain

[Jordi Serra @serrajordi5]

"Vivim en una societat profundament depenent de la ciència i la tecnologia i en la que gairebé ningú sap res sobre ciència i tecnologia. Això constitueix una fórmula segura per al desastre."

 -Carl Sagan

[Joan Carles Carles @jccarles]

Una bona explicació al que ha pogut passar quan aquí encara ningú en sap/vol donar cap #blackout #blackoutspain

[Alexander Stahel 🌻 @BurggrabenH]

Here is my theory how the major incident - a so called blackout - occurred at 12:30 CET today in the power system of Spain & Portugal:

1/n

[Joan Carles Carles @jccarles]

Una bona explicació del que pot haver passat #blackout #SpainBlackout

[Mark Nelson @energybants]

SPAIN BLACKOUTS: AN ANONYMOUS EXPERT VIEW

From a deep groupchat, last night, translated from Spanish, written by an expert in transmission and distribution of power. Not my words.

"What has happened on April 28 has a well-located origin: the Aragón-Catalonia corridor, which is one of the most important electric highways in Spain. There is not only the electricity produced by our solar and wind farms in the northeast, but also the electricity that we import from France. This international interconnection, although weak (it can only contribute 3% of our demand, well below the minimum of 10% that marks the EU), in times of stress is essential to balance the network.

At 12:32 p.m., in that Aragón-Catalonia corridor there was an electric shock. What exactly does "shake" mean? It means that suddenly and abnormally, the power that flowed through those lines began to vary violently, rising and falling in a very short time. Such abrupt variability can be due to three main causes:

1. That a relay or transformer on that electric highway detects an abnormal flow of current or voltage (higher or lower than expected) and automatically disconnected to avoid burning or destroyed. This is called that "opens" a relay or switch: it jumps and cuts the passage of electricity to protect itself.

2. That the enormous concentration of renewable energy in that area (mainly solar and wind) has created an electrical resonance: electronic inverters, which synchronize current, can sometimes be amplified between them if a small voltage alteration (for example, due to clouds, strong wind or a slight failure) extends like an echo to all devices, causing widespread oscillations.

3. That a wrong control order has been sent (by mistake or attack) from the SCADA systems, disconnecting or reducing the generation of multiple hit plants. There is no confirmation of this possibility yet, but it is being investigated.

What is known is that as a consequence of that shake, the interconnection with France jumped: we were isolated just at the worst time, when the peninsula needed external support to stabilize.

Without that French help, the frequency of the peninsular network (which should always be 50 Hz exact) began to drop quickly. The frequency is like the heartbeat of the network: if it falls too much, the systems understand that the patient (the network) is collapsing and automatically disconnected so as not to self-destruct. Thus, in just five seconds, the solar and wind farms were turned off —very sensitive to frequency variations—, 15 GW of power was lost suddenly (60% of all the electricity generated at that time), and the network could not take it anymore: it was It collapsed completely, showing the Redeia Platform (REE) a "0 MW" nationwide. That does not mean that all the turbines were physically turned off, but there was no generator synchronized at the common frequency of 50 Hz. It was, for practical purposes, a country off.

To ignite a completely dead network again, one essential thing is needed: plants that can start in black, that is, without receiving energy from anywhere else. Spain has identified five large hydroelectric jumps capable of doing this. However, and here is one of the great negligences that are coming to light, three of those five groups were stopped in scheduled maintenance, by business decision supervised by the administration. Only two were operational. That made the recovery much slower and weaker than it should be in a normal contingency plan.

The result is that, after almost 10 hours, only 35% to 40% of the national supply has been recovered, and there are still large areas in the dark or under scheduled cuts.

The situation reveals a very serious underlying problem:

Spain is still an energy island: it only has 3% foreign exchange capacity compared to its total demand."...

Cont:

[Joan Carles Carles @jccarles]

Els post de Follow Garriga us ajudaran a conèixer en profunditat la vida, cultura i valors americans 🇺🇸 Del tot recomanables

[Francesc Garriga @fgarriga]

🚨 Nou Follow Garriga

La pena de mort. Per què s’aplica? És efectiu per rebaixar criminalitat?

Seguim l’execució d’un pres a Oklahoma. Com es viuen les últimes hores?

Exonerats a última hora i innocents executats?

Tot aquí. S’agraeix clic i RT 👇🏻
https://t.co/5SqEru7A1U

[Joan Carles Carles @jccarles]

Arranca #26ConvencionAstroSab de la @astrosabadell amb dos conferenciants de luxe @lammermoor78 i els objectes més extrems de l'univers i @astrofalls descobrint nebuloses amb equip amateur

[Joan Carles Carles @jccarles]

"Dios no juega a los dados con el universo" i Bohr "No es nuestro lugar decirle a Él cómo manejar al mundo" @toni_pou @cececebe

[Joan Carles Carles @jccarles]

Magnífic llibre de narrativa de ficció sobre la història de la ciència de l'escriptor Benjamin Labatut. A destacar el relat Cuando dejamos de entender el mundo, sobre el descubriment de la teoría cuántica i la reunió de Solvay del 1927 on Einstein va dir la seva famosa frase