Monday, May 02, 2005

Quarks

My adopted xiao mei asked me about quarks the other day. Since I was reading the Bill Bryson book (see post below), I have shamelessly plagerized his explanation. but we all know that as long as one references one's sources, it's not plagerism, just a good literature search.

Particle physics is an amazingly confusing field, where no one really knows what's going on, because the subatomic realm is governed by completely different rules than in the macro-scale. In secondary sch they bluff u that protons, neutrons and electrons are the smallest things there are, and apparently that's not true at all.

So. this is the currently accepted theory: Quarks are even smaller particles held together by other particles called gluons and together they form protons and neutrons. Leptons form electrons and neutrinos (neutrinos are v.v.v.v. tiny particles given off during nuclear fusion in the Sun). Quarks n leptons together are called fermions. Bosons are particles that produce and carry forces n include photons and gluons. There's another one called the Higg's boson, which may or may not exist; it was invented to endow particles with mass.

what all the above means, I haven't the faintest clue. Once physicists manage to build even larger particle accelerators, they will no doubt discover yet more 'fundamental' particles to confuse the rest of us and spend billions and billions of $$. They contend that this will help us understand the meaning of life.


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