The electrical conductivity of certain materials changes dramatically as they are cooled to sufficiently low temperatures. In 1911, Heike Kamerlingh-Onnes found that some materials might enter a state where electrical resistance completely disappears. In this workshop, participants will apply Ohm's law and the 4-wire (Kelvin) technique to accurately measure small resistances. They will observe the resistance of a ceramic superconductor material diminish and suddenly disappear completely as the material is cooled down using liquid nitrogen.
thermal properties of matter; current of electricity; DC circuits; modern physics; temperature and ideal gases
|Delivery Type ||Lecture Demonstration|
|Level ||S3, S4, S5, JC1, JC2 |
|Number of Pax ||10 to 24|
|Duration ||3 hours |
|Timing || |