Excitation by electric fields
Electrons inside atoms can be excited not only by striking photons or electrons, but also by electric fields. The electric
Phonon modes in a linear lattice
This demonstration is specifically based upon the properties of phonons. A diatomic chain with well defined periodicity is used as
Close packing of atoms
Table tennis balls that are glued together can be stacked on top of one another showing the two most important
Eddy current and Lenz’s law
An interesting demonstration of eddy current Plastic pipeis made by dropping a spherical or a cylindrical magnet down a
Bicycle gyroscope
The bicycle gyroscope is used to demonstrate torque induced procession. Such a gyroscope seemingly defies gravity. This is a useful
Candle in the Wind
An electric field can breakdown the insulation properties of air. This creates a mass of oppositely charged ions and electrons
Surface Charges on Current Carrying Conductors
Surface charges on current carrying conductors is a well known phenomenon though seldom talked about in the introductory courses. Besides,
