Capo 3C C FA quark is a fundamental constituent of matterG F CObserved in 1968 through deep electric scatterC FWe found that protons were more complex than we thoughtG F CWe thought they were solid particles but they are notC FProtons in fact are made up of three separate piecesG F CIt just gets more confusing as our knowledge increasesC FAnd that is what a quark is; it?s a piece of a protonG F CAnd they also make up other things including the neutronC FUp down strange charm top bottomG F CIf you don?t know what a quark is it doesn?t matter, you still got emC FAnd with leptons and bosons unless something?s amissG F CThey make up everything that we can see and that we know existsC C FThings made up of quarks including protons and neutronsG F CAre composite particles that physicist call hadronsC FMany times those hadrons are theoretically describedG F CBut most exist for only very brief amounts of timeC C FQuarks have electric charge, colour charge, mass and spinG F CAnd having colour charge means they exist solely in sideC FOther kinds of particles that cannot exist aloneG F CWhich is why quarks have never been studied on their ownC FUp down strange charm top bottomG F CIf you don?t know what a quark is it doesn?t matter, you still got emC FAnd with leptons and bosons unless something?s amissG F CThey make up everything that we can see and that we know existsC C FThese tiny bits of matter are part of almost everythingG F CThere is no unified theory to make it less confusingC C FBut the fact that we?ve identified that they exist at allG F CIs so remarkable that I am constantly in aweC FUp down strange charm top bottomG F CIf you don?t know what a quark is it doesn?t matter, you still got emC FAnd with leptons and bosons unless something?s amissG F CThey make up everything that we can see and that we know exists
Source: http://www.guitaretab.com/h/hank-green/270820.html