Week 1 (Aug. 26 - 30)
Read: Iron, Loadstones, and Terrestrial Magnetism (Chap. 1) and The Life and Death of a Magnet (Chap. 2)
PHY 202 Lecture: Scalars, vectors, and vector algebra
PHY 202 Lecture: Scalars, vectors, and vector algebra
Quiz: First day of class, so no quiz!
Homework:
Laboratory: Magnetism Laboratory (Ex. 1.3). In this laboratory exercise, we will carry out qualitative and quantitative experiments involving loadstones, ceramic (ferrite) magnets, and rare earth (neodymium) magnets. In particular, you should do the following exercises:
Chapter 1 (5 videos):
Chapter 2 (4 videos):
Homework:
- Iron, loadstones and the Earth (Ex.1.1),
- Loadstone logic (Ex. 1.2*),
- Compass and Terrella (Ex. 2.1),
- Curie Temperature (Ex. 2.2*)
Laboratory: Magnetism Laboratory (Ex. 1.3). In this laboratory exercise, we will carry out qualitative and quantitative experiments involving loadstones, ceramic (ferrite) magnets, and rare earth (neodymium) magnets. In particular, you should do the following exercises:
- Identify the north and south faces of a magnet by calibrating it against the earth. What is your procedure? Use bar magnets, ceramic magnets, and lodestones. Consider: are the north and south faces of a magnet always on opposite ends of the magnet? Can a magnet have more than one North Pole?
- Measure the attractive force between magnets using a calibrated force sensor. How does the attractive (or repulsive) force depend on the distance between the magnets? Be sure to make a clear plot of force (vertical axis) versus separation (horizontal axis). Use Logger Pro to do a power-law fit to your data. Is this consistent with what you would expect?
- Can magnetic force be shielded? In particular, study how intervening materials such as plastic, wood, aluminum and iron affect the attractive force between two magnets.
Chapter 1 (5 videos):
Chapter 2 (4 videos):