View allAll Photos Tagged Entropy
Entropy is the general trend of the universe toward death and disorder. (Entropía es la tendencia general del universo hacia la muerte y el desorden) James R. Newman
Como entropía se conoce la tendencia natural a la pérdida de orden en un sistema. La palabra, como tal, proviene del griego ἐντροπία (entropía), que literalmente significa ‘vuelta’, aunque hoy en día es empleada en varios sentidos figurados.
El término entropía fue inicialmente acuñado por el físico alemán Rudolf Clausius al observar que, en cualquier proceso irreversible, siempre se iba una pequeña cantidad de energía térmica fuera de la frontera del sistema. A partir de entonces, el término ha sido utilizado en las más variadas disciplinas de conocimiento, como la física, la química, las matemáticas, la astrofísica, la lingüística, la computación o la ecología, para hacer referencia a la medida de desorden a que tiende un sistema.
Así, por ejemplo, en Física, la entropía se refiere al grado de irreversibilidad que, en un sistema termodinámico, es alcanzado después de un proceso que implique la transformación de energía. En Química, por su lado, hace referencia a la entropía observada en la formación de un compuesto químico. En Astrofísica, alude a la entropía observada en los agujeros negros. En teorías de la información, la entropía es el grado de incertidumbre que se tiene en relación con un conjunto de datos. Mientras que, en Informática, hace referencia a la aleatoriedad recogida por un sistema operativo o una aplicación para su uso en criptografía.
www.significados.com/entropia/
La entropía puede interpretarse como una medida de la distribución aleatoria de un sistema. Se dice que un sistema altamente distribuido al azar tiene alta entropía. Un sistema en una condición improbable tendrá una tendencia natural a reorganizarse a una condición más probable (similar a una distribución al azar), reorganización que dará como resultado un aumento de la entropía. La entropía alcanzará un máximo cuando el sistema se acerque al equilibrio, y entonces se alcanzará la configuración de mayor probabilidad.
Una magnitud es una función de estado si, y sólo si, su cambio de valor entre dos estados es independiente del proceso seguido para llegar de un estado a otro. Esa caracterización de función de estado es fundamental a la hora de definir la variación de entropía.
La variación de entropía nos muestra la variación del orden molecular ocurrido en una reacción química. Si el incremento de entropía es positivo, los productos presentan un mayor desorden molecular (mayor entropía) que los reactivos. En cambio, cuando el incremento es negativo, los productos son más ordenados. Hay una relación entre la entropía y la espontaneidad de una reacción química, que viene dada por la energía de Gibbs.
es.wikipedia.org/wiki/Entropía
The second law of thermodynamics states that the entropy of an isolated system never decreases. Such systems spontaneously evolve towards thermodynamic equilibrium, the state with maximum entropy. Non-isolated systems may lose entropy, provided their environment's entropy increases by at least that amount so that the total entropy increases. Entropy is a function of the state of the system, so the change in entropy of a system is determined by its initial and final states. In the idealization that a process is reversible, the entropy does not change, while irreversible processes always increase the total entropy.
Because it is determined by the number of random microstates, entropy is related to the amount of additional information needed to specify the exact physical state of a system, given its macroscopic specification. For this reason, it is often said that entropy is an expression of the disorder, or randomness of a system, or of the lack of information about it. The concept of entropy plays a central role in information theory.
The degradation of the matter and energy in the universe to an ultimate state of inert uniformity.
A process of degradation or running down or a trend to disorder
Settled on this for now. I fixed the waist, added some bushings to the upper arms, and changed up the modes a bit, though I'll show those at a later point.
"Men seek retreats for themselves, houses in the country, at the seashore, and in the mountains; and you tend to desire such things very much. But this is a characteristic of the most common sort of men, for it is in your power whenever you will to choose to retreat into yourself. For nowhere either with more quiet or more freedom from trouble does a man retreat than into his own soul, particularly when he has within him such thoughts that by looking into them he is immediately perfectly tranquil; and I affirm that tranquillity is nothing other than the proper ordering of the mind."
Marcus Aurelius
Copyright © 2018 by Mansoor Bashir
No part of this picture may be reproduced or transmitted in any form or by any means (on websites, blogs) without prior permission.
Or: The inevitable and steady deterioration of a system or society.
It’s now been more than two years since I photographed this once proud boat at its resting place along the river Glomma, and the years have not been kind to the wreck.
More sunken, more ready to disappear into mother Earth than I had expected, this time.
Link to the 2016 shot, above.
The 2015 shot is here.
And the 2014 shot, my first of this once proud boat, is here.
Europe, The Netherlands, Zuid Holland, Rotterdam, Hoek van Holland, North Sea, Beach, Shells, Razor shells (uncut)
The elongated shells on display here (shot during low tide) are razor shells (Ensis magnus). They are obviously empty.
The razor shells live under the sand, using their powerful feet to dig to a safe depth. Its digging activity comprises six stages, repeated cyclically. A digging cycle involves the integration of the muscular foot (which takes up a large part of the body) with the opening and closing of the valve and one end. The foot is inflated hydraulically, extending into the sand and anchoring the animal. Deflation of the foot then draws the shell down. The razor shell also squirts water into the sand, removing loose sand from its path. The foot is thought to exert a pressure of about 196 kilopascals (2.00 kgf/cm2; 28.4 psi).
The presence of a razor shell is revealed by a keyhole-shaped hole in the sand, made by its siphons during suspension feeding for plankton.
Razor clams can grow up to eight inches long, but are typically only four to six inches. Razor clams are filter feeders - they strain food particles from the water around them. They primarily eat microscopic algae but can also consume small crustaceans and other organic matter. (Wiki)
This is number 96 of the Adventures in Chaos album and 128 of Beaches.
The Trevor Carpenter 2018 Photo Challenge
WEEK 15: APRIL 2008/2010 FLASHBACK – ENTROPY
We keep this little metal pail in our kitchen to throw out vegetable matter for compost.
I opened it today and thought, since the stuff hadn't decayed all that much, the variety of colors and textures were pretty cool. I thought it would make for an interesting photo for Entropy.
Pennsylvania Trolly Graveyard.
I visited the Trolly Graveyard with one of Matt Christopher's Abandoned America Photo Workshops.
If you are interested in his trips to amazing decaying places in the Mid-Atlantic region, check out his website here: www.abandonedamerica.us
Entropy in Elora. Elora, ON (Kiddie-Kar Factory) Once used in "An American Christmas Carol" as a Furniture factory. The town of Elora was the backdrop for the 1979 Christmas Special that starred Henry Winkler.
© Milan Cvetanovic
All rights reserved!
www.youtube.com/watch?v=-9WC-s1Auak
A Black Sea candid, Burgas, Bulgaria.
The old west pier at Brighton, UK.
Slowly being reclaimed by the tides and storms in the English Channel
----------------------------
Please don't use this image on websites, blogs or other media without my explicit permission.
© All rights reserved
----------------------------
Horsehead Nebula in infrared
Source: hubblesite.org/newscenter/archive/releases/2004/10/image/a
Retouching: Lightroom 3.6
The random waves have moved a random collection of pebbles creating order in a randomly shaped gap in the rocks at Lee Bay North Devon.
For scale, this is a little over 1m wide.
PAREIDOLIA: I see an angler fish.
#319