Schrodinger´s cat (Y LA FÍSICA CUÁNTICA)

Schrödinger's cat is a famous illustration of the principle in quantum theory ofsuperposition, proposed by Erwin Schrödinger in 1935. Schrödinger's cat serves to demonstrate the apparent conflict between what quantum theory tells us is true about the nature and behavior of matter on the microscopic level and what we observe to be true about the nature and behavior of matter on the macroscopic level -- everything visible to the unaided human eye.

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Here's Schrödinger's (theoretical) experiment: We place a living cat into a steel chamber, along with a device containing a vial of hydrocyanic acid. There is, in the chamber, a very small amount of hydrocyanic acid, a radioactive substance. If even a single atom of the substance decays during the test period, a relay mechanism will trip a hammer, which will, in turn, break the vial and kill the cat. 

The observer cannot know whether or not an atom of the substance has decayed, and consequently, cannot know whether the vial has been broken, the hydrocyanic acid released, and the cat killed. Since we cannot know, according to quantum law, the cat is both dead and alive, in what is called a superposition of states. It is only when we break open the box and learn the condition of the cat that the superposition is lost, and the cat becomes one or the other (dead or alive). This situation is sometimes called quantum indeterminacy or the observer's paradox: the observation or measurement itself affects an outcome, so that the outcome as such does not exist unless the measurement is made. (That is, there is no single outcome unless it is observed.)

We know that superposition actually occurs at the subatomic level, because there are observable effects of interference, in which a single particle is demonstrated to be in multiple locations simultaneously. What that fact implies about the nature of reality on the observable level (cats, for example, as opposed to electrons) is one of the stickiest areas of quantum physics. Schrödinger himself is rumored to have said, later in life, that he wished he had never met that cat.

Pill to prevent sunburn 'within five years' - Telegraph

Se dice que un medicamento oral podrá ayudarnos a prevenir los efectos nocivos del sol. Hoy está en estudio y procede de componentes de los corales.

Pill to prevent sunburn 'within five years' - Telegraph:

But in the meantime.......... use cream filters and sunglasses!

ACERCA DEL CAMBIO CLIMÁTICO

Todavía hoy en día hay quien opina que el hombre no es el verdadero causante del cambio climático que amenaza nuestro futuro. Valoren los datos y opinen.


Some graphics showing interesting facts about the climate change.


Here is a graph of human released CO2 and measured temperature:

Ø   And here it is on a bigger scale for a clear picture. Whatever you might think of Al Gore and others, these are the numbers and they don´t lie:     Now see a graph comparing  sun activity vs.temperature: It does not show this significant influence: 

BBC Nature - Common jellyfish videos, news and facts

Summer is the perfect time to explore and study the wildlife of our seaside.

BBC Nature - Common jellyfish videos, news and facts

En verano tememos encontrarnos medusas en la playa. Su picadura puede ser peligrosa. Sin embargo, estudiémoslas y apreciemos su belleza. El verano es un momento perfecto para explorar nuestras costas con las debidas precauciones.

La creación de los continentes con humor

Un precioso corto de película en la que, en clave de humor, la genial ardilla Scrat nos muestra las capas de la tierra y el origen de la forma actual de la corteza terrestre.
https://mail.google.com/mail/ui=2&ik=d8a4043d31&view=att&th=130be0893690391b&attid=0.1&disp=safe&zw



SCRAT´S CONTINENTAL CRACK-UP!

How To Put A New Element On The Periodic Table : NPR

Enlace que nos lleva a una página en la que el proceso está explicado (muy recomendable escuchar la versión "voz" para acostumbrar nuestros oídos a la lengua inglesa): How To Put A New Element On The Periodic Table : NPR

2 nuevos elementos han sido oficialmente añadidos en la tabla periódica de los elementos. Fueron descubiertos hace años pero se ha hecho necesaria la aprobación del comité internacional antes de que se incluyeran en la famosa tabla.

En 2006 se incluyó el elemento 111 con el nombre de "Roentgenio"

Se trata de los elementos 114 y 116 que, realmente, no se encuentran en la naturaleza sino que son producto de laboratorio. Esto puede parecer "trampa" y ese tema podría llevarnos a discusiones éticas diversas pero lo cierto es que existen. Aparecen una sola vez entre millones de choques de elementos diferentes, tras la fusión de sus núcleos. Sus nombres todavía no han sido decididos aunque se barajan ideas tan variopintas como "Doritos", "Viagrium" o, en plan más serio, algún nombre que haga referencia a científicos del grupo de la investigación.

Erupción volcánica en Chile: Una muestra de la fuerza de la Naturaleza.

Extraordinary images have shown the full force of Mother Nature as a Chilean volcano erupts for the first time in 50 years.

Ash has been thrown six miles up into the sky and the South American government has ordered the evacuation of thousands of residents.

Winds fanned the ash toward neighbouring Argentina, darkening the sky in the ski resort city of San Carlos de Bariloche, in the centre of the country, and its airport has also been closed.

The eruption in the Puyehue-Cordon Caulle volcanic chain, about 575 miles south of the capital, Santiago, also prompted authorities to close a busy border crossing into Argentina. It was not immediately clear which of the chain's four volcanoes had erupted because of ash cover and weather conditions. The chain last saw a major eruption in 1960.

Local media said the smell of sulphur hung in the air and there was constant seismic activity.

'The Cordon Caulle (volcanic range) has entered an eruptive process, with an explosion resulting in a 10-kilometre-high gas column,' the state emergency office ONEMI said.
This development is the latest volcanic activity to affect the country. Three years ago, Chile's Chaiten volcano erupted spectacularly for the first time in thousands of years, spewing molten rock and a vast cloud of ash that reached the stratosphere and was visible from space.

It also drifted over neighbouring Argentina, coating towns. Chile's Llaima volcano, one of South America's most active, also erupted that year and again in 2009.

Chile's chain of about 2,000 volcanoes is the world's second largest after Indonesia. Some 50 to 60 are on record as having erupted, and 500 are potentially active.