5B20.30/35 – Electroscope or a Radio in Faraday’s cage
With this demonstration we can better visualize how the Faraday’s cage works and why it works.
Electricity
5H30.11 – Paraller wires
This demonstration showcases the connection between electricity and magnetism by providing an insight into the behavior of wires under electric current and influence of the magnetic field of each of them.
5B20.35 – Radio inside Faraday’s cage
This demonstration showcases that Faraday’s cage can block external static and non-static electric fields. It illustrates that electromagnetic waves, which include radio waves, cannot penetrate the cage. This demonstration provides a clear, visual example of how Faraday cages work, making abstract concepts like electromagnetic shielding more tangible and understandable.
5C10.10 – Leyden jar
This demonstration shows how the Leyden jar can store electrical charge, which can then be discharged in a visible spark. The dramatic discharge of a spark can engage audiences and stimulate interest in the science of electricity.
5H10.20 – Oersted’s effect
This experiment demonstrates how a flowing current through a wire generates a magnetic field by putting a needle next to it.
5B20.30 – Faraday’s cage – electroscope
With this demonstration we can better visualize how the faraday’s cage works and why it works.
5D20.10 – Temperature Dependence of Resistance
This demonstration illustrates the temperature dependence of resistance. The effect is caused by the fact that the electrons moving through the wire collide with vibrations (phonons) created in the material by thermal noise. At lower temperatures this will happen less, and thus the resistance goes down. In semiconductors and insulators an opposite effect occurs, where resistance decreases with temperature due to the lowering of the Fermi level, and thus less electrons being in the conduction band.