|
|
||||||||||||||||||||||||||||||||||||||||||||||||||
The universe is all worked up
|
The electron | ||||||
automatic translation | ||||||
What is the electron? | ||||||
| The electron is rather a kind of electric weighing point, which no one knows where it is not, nor where it goes. It turns on itself like a top without being able to stop and he introduced some form of collusion very discreet (weak interaction) with most other particles. It belongs to the family of leptons where it occupies pride of place. In the quantum world, this means that when a force acts on it, she meets an object without extended, a special, not a ball that would have a certain volume. If you want to predict where to find, even with the most accurate calculations, you can get information rather vague like "this electron is somewhere there in an area of some 10-10 meters and it goes to almost up to tens of thousands of kilometers per second. " And if you want to be more specific about its position, you may need to be even more vague about its direction and speed and vice versa. It is one of the paradoxes of quantum mechanics: you do not get out of this dilemma even with the best instruments, the most accurate equations and the biggest computers in the world, because in reality the electron has no precise location. | It remains in a sort of vague, both just a little here and there, to the point where, for example, through a bristol drilled two holes closer, no one can say what hole he is past, or even whether it was passed by a single hole. However, if during his wanderings he sometimes jostling another electron, it happens in a particular place, for example on a photographic grain will be impressed: it leaves a small black spot, very small and is can accurately measure the position. But after this, it set sail again on its wave uncertain, in a direction that nobody can predict. That is the way of all known particles, electrons, protons and neutrons ... This kind of vagueness has left long puzzled researchers: they were used to concrete and precise quantities as the directions of stars or paths of the planets. Great characters of science, Albert Einstein, Louis de Broglie and others have long struggled to find a way to assimilate to the "material" they described in their usual and equations that looked more or less to tiny cannonballs. | They had to admit the unthinkable: particulate matter, despite the misleading word we use to describe them, are never far traceable. They are simply there, in an area roughly defined within an area bounded by the forces acting on them, forces that trap and lead to their will. A physicist Werner Heisenberg discovered relations uncertainties, small mathematical inequalities that combine the vagueness of their positions and their speeds, and reflect, in mathematical form, this sense of vagueness. It introduces the unexpected at the heart of the matter. It even offers to the electron an opportunity to make some sort of exploits, as barriers to cross seemingly impassable due to the fact that he happens to be both on both sides of the fence! This fundamental uncertainty reflected in the fact that a particle, in the equations, is not associated with a material to specific coordinates, as was the case in classical mechanics. | ||||
It is a wave | ||||||
This represents is a wave, ie a size calculated at various points of space and whose evolution over time is also calculated. |
| They are found clinging to one another, the proton center almost immobile, the electron to spread a little chaotic around him. | ||||
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||
The universe is all worked up
|
|
| Astronomy - October 15, 2007 |
