
1.7.1.4.2 Théorie atomique
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Quantum Mechanics for Beginners; a fun-filled Introduction.
How the Princess began to Feel the Pea. Science is exciting because it is always in trouble. No matter how excellent a theory is, it always misses some point or other. Even our most precious ideas about the universe are not able to explain everything; there's always a blind spot.LE PHENOMENE
La matière est faite d'atomes, la plupart du temps assemblés en molécules. Au cœur de ces atomes, se trouve un noyau, 10 000 à 100 000 fois plus petit. La radioactivité est un phénomène qui se produit dans ce noyau au plus profond des atomes. Le phénomène est difficile à observer : il a fallu attendre 1896 pour que soient décelés des rayonnements d'origine inconnue, émis par des sels d'uranium. Certains noyaux atomiques instables sont la source de rayonnements, désignés par les trois premières lettres de l'alphabet grec : alpha (α), bêta (β) et gamma (γ). Ces rayonnements sont des particules émises par des noyaux avec une grande énergie.Quantum Entanglements 1, I | Stanford Physics Lecture
About Stanford University One of the world's leading universities, Stanford was founded in 1885 in what is now Stanford, California. It is comprised of seven schools, four of which are devoted exclusively to graduate education. Stanford's most renowned programs include the Graduate School of Business, Law School, School of Engineering, and School of Medicine. Notable alumni include author John Steinbeck, Supreme Court Justice William Rehnquist, and Google founders Sergey Brin and Larry Page. Explore Our Degree ProgramsHow the Princess began to Feel the Pea. Science is exciting because it is always in trouble. No matter how excellent a theory is, it always misses some point or other. Even our most precious ideas about the universe are not able to explain everything; there's always a blind spot. And when the hopeful folks zoom in on that blind spot it pretty much always turns out to be a lot larger than anybody thought, and all of us a mere bunch of naive beginners. At the end of the eighteenth century the blind spot of regular mechanics (=the library of dogmas that teach the ins and outs of objects moving and colliding) covered the behavior of very small objects, such as electrons, and the behavior that light caused when it hit small things like electrons.
Quantum Mechanics for Beginners; a fun-filled Introduction.
Quantum world is actually not weird at all. Double slit situation- An electron is apparently surrounded by a cloud of virtual particles that pop in and out of existence. Virtual particles are particle/ antiparticle pairs (electrons/ positrons) that get created from the 'vacuum' and disappear by annihilating each other. If this picture is true, the created particle/ antiparticle pairs may not adhere to and behave with sanctity and it is possible that the original electron may get annihilated by one of the virtual positrons created 'next' to it. So the position of the 'real electron' keeps changing in the cloud and we may feel that its exact position is unpredictable.

