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.
In this video, I discuss the experiments that led up to Chadwick’s identification of the neutron
What is Heisenberg’s Uncertainty Principle? This strange concept is at the heart of quantum Physics. In this video, I explain, using simple terms, what it mean.
De Broglie postulated that moving particles have a wavelength, but where was the proof? Enter Davisson and Germer who won the Nobel prize for Physics to show that electrons act like waves
In this video, we look at de Broglie and his strange suggestion that is light can have particle like properties, can matter have wavelike properties
In this video, I discuss the postulates of Bohr’s atom, how it solves the problem of Rutherford’s model and how at the same time explains the lines is spectral analysis, including the Balmer lines
Before discussing Bohr, it is helpful to look at the history of spectral analysis in the 1800’s, the Balmer lines and the Rydberg formula that describes them. This is then fully explained by Bohr in 1913
In the first of a series of videos on the history of the atom, I discuss famous gold foil experiment that established a planetary model of the atom.
Here are the solutions to the short answer section of the HSC Physics paper for 2017.
Here are the solutions to the short answer section of the HSC Physics paper 2017 – THIS DOES HAVE A SMALL ERROR in Q29b
Here are the answers to the multiple choice section of the PHYSICS HSC paper 2017