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The electromagnetic spectrum. The essential parts of a spectrometer. How the emission spectrum of atomic hydrogen can be recorded. The relationships between the lines of the hydrogen spectrum. How each line...
An experiment demonstrating the electromagnetic nature of gamma radiation. The gamma rays are obtained by bombarding a metal plate with deuterons secured in bursts from a cyclotron. The velocity of gamma...
Discusses the Geiger and Marsden experiment (1913) on the scattering of alpha particles by a metal foil.
The Millikan experiment, showing the existence of, and charge on the electron. Made in co-operation with the organisers of the Nuffield Science Teaching Project.
Explains what microcircuits are and describes the production and applications of integrated circuits.
Part 2 explains fission products of a nuclear reactor, neutron reactions, proton reactions and positron decay.
Gives a simplified explanation of the operation of a two-cavity klystron amplifier. Animated sequences illustrate the operation of the cavity resonators, the bunching of electrons and the amplifying action...
The development and applications of the mass spectrometer and the difference between the direct-focusing and double-focusing mass spectrometer.*
Part 1: Insulators, conductors and semi-conductors are compared and the structure of pure germanium. The concept of electrons and holes and the effects of temperature and electric fields on their movements....
Part 2: Demonstrates the determination of velocity, refraction, dispersion, diffraction, interference, polarisation and absorption of electromagnetic radiation. Sequences illustrate absorption by the...
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