Elementary Particles The First Subatomic Particles Protons Found

Elementary Particles

The First Subatomic Particles �Protons: �Found in the nucleus �Charge of +1 �Mass of 1 amu �Neutrons: �Found in the nucleus �Charge of 0 �Mass of 1 amu �Electrons: �Found outside the nucleus �Charge of -1 �Mass of 0. 005 amu �Other Particles �neutrino �antineutrino �quarks �leptons

Basic Rule of Electricity �Who was the ‘ 80’s Pop Star who wrote a song about the basic rule of electricity? �Paula Abdul! “Opposites Attract” �Opposite charges (+/-) attract and like charges repel! �Law that says how much force they attract or repel is called Coulomb’s Law.

Coulomb’s Law �It says that the force is directly related to the charge. �Double the charge, double the force. �Halve the charge, halve the force �Also says that force is related to the inverse square of the distance. �Double the distance and the force goes down by four. �Halve the distance and the force goes up by four.

Coulomb’s Math �For charge x 2 Force 10 20 5 10 x 2 �For distance ÷ 2 1 x 2 2 0. 5 Force ÷ 22 4 1 16 x 22

The Math Relationship �Charge and Force are Directly Related �This means no squaring �Distance and force are inversely related by the square �This means squaring �This means when you divide one you multiply the other

CERN’s Large Hadron Collider �This is the hottest area in physics research today.

LHC 2008 �The Large Hadron Collider is the largest and most complex scientific instrument ever built and the highest energy particle accelerator in the world. The accelerator is located 100 m underground and runs through both French and Swiss territory. �Year 2008 marks the culmination of 20 years of work by physicists, engineers, technicians and support staff from over 80 different countries.

Explore about LHC �Now you get a chance to find out more about the Large Hadron Collider. �Go to this site: https: //lhc 2008. web. cern. ch/LHC 2008/ �Then try and find information about these three areas of the LHC: �What is it? �When did it open? �What is it trying to accomplish?