## ultrasound – A scans explained

Reviews how an A amplitude (A) scan is produced in the context of ultrasound/sonograms

## ultrasound and acoustic impedance

An intro to ultrasound (sonograms) and the underlying factor (acoustic impedance) that determines how an image is formed.

## Optics – The physics of the eye (Accommodation)

Want to know how the eye focuses or accommodates? This video goes through the physics of accommodation, how the eye adjusts in order to produce a sharp image on the retina. It also covers long and short sightedness and how to fix them.

## Optics – Lenses and virtual images

In this video I cover the difference between the two lens types and how they produce virtual images.

## Refraction explained

In this video, I go through refraction using the excellent animation from pHET (http://phet.colorado.edu) I discuss the basics of refraction as well as Snell’s Law.

## Piezoelectric Effect Explained

This video covers how crystals are used to create and receive high frequency sound. Apart from their use in small speakers, they are especially useful in their used of transducers for ultrasound imaging.

## solenoids explained

How do you make a current carrying wire into an electromagnet? This video explains the physics of the solenoid, covering both the shape and size of the magnetic field it generates

## electric field diagrams

What is an electric field? How do you draw them diagrammatically? Watch the video as I explain fields around – single charges – multiple charges – plates

## series and parallel circuits – the math

A follow up of my first video on circuits, this video explores the mathematics. of circuits, with the use of Ohm’s Law to determine resistance, voltage and current, in both series and parallel circuits.

## AC and induction motors explained

In this video I discuss AC motors, in particular, synchronous motors. I then lead on to the physics behind induction motors

## meissner effect explanation (basic)

I run through a basic explanation, without involving quantum physics, to explain why the magnet levitates

## How a diode works

How do two bits of semiconductor make a diode? In this video, I show you what happens when you put two semiconductors together and how that is able to convert AC to DC

## michelson morley maths

This is an addendum to my Michelson Morley Experiment video It explains the maths behind why they thought the light paths would arrive at different times

## MRI Basics : Part 4 : Relaxation

In part 4 of my 5 part series I discuss how an image is formed from the result of relaxation. I also discuss T1 and T2 weighting and how that proves the image.

## MRI basics: part 5 : Determine Location

In my final part of a 5 part series on MRI, I discuss how the MRI machine uses gradient coils to determine the location of precessing hydrogen atoms. I also do a brief review of all 5 parts

## MRI basics: part 3 : Resonance

In part 3 of my MRI series, I discuss how an radio frequency alters the aligned precessing nuclei through the process of resonance Both are explained at length in a non technical fashion

## BCS Theory simplified

Want to understand how superconductors but don’t have a quantum mechanics degree? Here is a simplified explanation of the BCS theory to help you, sing a clear explanation with animations.

## michelson morley experiment explained

In this video I review the famous Michelson Morley experiment, what is known as the most famous null result experiment. Although impossible to reconcile with the understating of Physics at the time, it became fully understood in the context of Einstein’s Theory of Special Relativity. I use a couple of useful analogies to help you understand the experiment.

## Meissner Effect demonstrated (basic)

A video that demonstrates the Meissner Effect. Produced with the Australian HSC in mind. This does abruptly end as I had to remove an erroneous section. Nonetheless, it’s the meissner effect that causes levitation. Any further explanation for the stability of the levitation is Quantum related and beyond the school of a high school student.

## MRI basics: part 1: Nuclear spin

In the first of a series on MRI, I discuss nuclear spin and how it lead to net spin.I avoid discussion of quantum mechanics where possible to help the high school student understand spin.