In this video I review, with the physics explained, how JJ Thomson discovered the electron I briefly review the history prior and also touch on electric fields, magnetic fields and circular motion and how they all contribute to JJ Thomson’s discovery
In this video I look an application of the motor effect – the galvanometer
So why do current bearing wires attract? Why are their spacer between high voltage power lines? In this video I demonstrate and explain why current bearing wires experience a force between each, all due to the motor effect!.
This video covers eddy currents and Lenz’ Law using the well known demonstration of dropping a rare earth magnet down an aluminium tube.
A short video that explains the physics of a speaker. This video covers the dot point (in the NSW physics syllabus) • identify data sources, gather and process information to qualitatively describe the application of the motor effect in: the loudspeaker
In this video I discuss the nature of back emf and why a motor burns out when it’s suddenly stops
A short overview of Wien’s Law using the animation from pHET
Want to know how a solar cell works. Here is a summary of how a solar cell functions, utilising two key physics concepts – semiconductors and the Photoelectric Effect
This video examines the experiment Hertz performed to validate Maxwell’s prediction for electromagnetic waves. It also touches on his observation of the photoelectric effect. Prepared to help students doing the HSC in Australia, it is suitable in other jurisdictions as well.
Explaining the theory behind black body radiation, the problems it caused in terms of classical theory, and Max Planck’s solution
The 3rd in the series on the photoelectric effect (See my videos on Hertz and Planck) Covers how observations of the photoelectric effect lead to Einstein’s theory in understanding the effect.
What is nuclear fusion and what doe sit generate energy? Where does the energy from the sun come from? This video answers both questions as it reviews how hydrogen fuses to form helium and generate lots of energy.
In this video I review the HR (or Hertzsprung Russell) Diagram. Quickly reviewing the concepts of brightness and colour of a star, I show you how we can classify stars and how that leads to better understanding of the nature of stars.
Think you know how a transformer works? Test your knowledge by taking the test. A series of multiple choice questions with answers explained
How do use fission to generate electricity? This video discusses the basics of a nuclear fission reactor, and the functions of its relative parts
Nuclear fission – the splitting of the atom… How does this occur and why does it release a large amount of energy? The video covers all this, as well as a brief history of its discovery.
What is binding energy and where does it come from? What holds an atom’s nucleus together? This video discusses the mass defect and its contribution to binding energy
What hold a nucleus together? Why does it not just fall apart. In this video I discuss the Strong Nuclear Force, in simple terms that holds the atom together. This concept is essential to explain radioactive decay, fission and fusion.