ultrasound – A scans explained
In Atal Tinkering Labs ATL, More Info | No commentReviews how an A amplitude (A) scan is produced in the context of ultrasound/sonograms
20 Dec
20 Dec
ultrasound and acoustic impedance
In Atal Tinkering Labs ATL, More Info | No commentAn intro to ultrasound (sonograms) and the underlying factor (acoustic impedance) that determines how an image is formed.
20 Dec
Optics – The physics of the eye (Accommodation)
In Atal Tinkering Labs ATL, More Info | No commentWant 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.
20 Dec
Optics – Lenses and virtual images
In Atal Tinkering Labs ATL, More Info | No commentIn this video I cover the difference between the two lens types and how they produce virtual images.
20 Dec
Refraction explained
In Atal Tinkering Labs ATL, More Info | No commentIn 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.
20 Dec
Piezoelectric Effect Explained
In Atal Tinkering Labs ATL, More Info | No commentThis 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.
20 Dec
solenoids explained
In Atal Tinkering Labs ATL, More Info | No commentHow 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
20 Dec
electric field diagrams
In Atal Tinkering Labs ATL, More Info | No commentWhat is an electric field? How do you draw them diagrammatically? Watch the video as I explain fields around – single charges – multiple charges – plates
20 Dec
series and parallel circuits – the math
In Atal Tinkering Labs ATL, More Info | No commentA 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.
20 Dec
AC and induction motors explained
In Atal Tinkering Labs ATL, More Info | No commentIn this video I discuss AC motors, in particular, synchronous motors. I then lead on to the physics behind induction motors
20 Dec
meissner effect explanation (basic)
In Atal Tinkering Labs ATL, More Info | No commentI run through a basic explanation, without involving quantum physics, to explain why the magnet levitates
20 Dec
How a diode works
In Atal Tinkering Labs ATL, More Info | No commentHow 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
20 Dec
michelson morley maths
In Atal Tinkering Labs ATL, More Info | No commentThis 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
20 Dec
MRI Basics : Part 4 : Relaxation
In Atal Tinkering Labs ATL, More Info | No commentIn 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.
20 Dec
MRI basics: part 5 : Determine Location
In Atal Tinkering Labs ATL, More Info | No commentIn 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
20 Dec
MRI basics: part 3 : Resonance
In Atal Tinkering Labs ATL, More Info | No commentIn 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
20 Dec
BCS Theory simplified
In Atal Tinkering Labs ATL, More Info | No commentWant 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.
20 Dec
michelson morley experiment explained
In Atal Tinkering Labs ATL, More Info | No commentIn 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.
20 Dec
Meissner Effect demonstrated (basic)
In Atal Tinkering Labs ATL, More Info | No commentA 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.
20 Dec
MRI basics: part 1: Nuclear spin
In Atal Tinkering Labs ATL, More Info | No commentIn 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.
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