DrPhysicsA YouTube Channel

Press here for YouTube main page.

Follow me on Twitter: @BobEagle2

The YouTube channel contains a series of Physics videos which are intended to give a basic introduction to the subjects covered. They explain the essence of the subject in as simple as way as possible. They assume basic knowledge of algebra and calculus and some general physics.

Dr PhysicsA has a BSc (physics) and PhD (nuclear physics) from King's College, London.

The videos are organised into playlists (set out below):

A Level Physics Revision
GCSE Physics Revision
A Level Physics Exam Questions Examples
Atomic Physics
Electricity & Magnetism
Particle Physics
Thermodynamics
Nuclear Physics
Classical Mechanics
Special & General Relativity
Cosmology
Quantum Mechanics
Miscellaneous

Each playlist contains videos in the order in which they can be best viewed if you want to view the complete set. Alternatively you can select a particular video, although in some cases I may make mention of information derived in another video. In most cases these will be earlier videos in the playlist but occasionally I cross refer to other videos elsewhere on the channel, to avoid too much duplication of material. Some videos appear in more than one playlist.

The material on the YouTube channel ranges from GCSE, through A level to 1st/2nd year university physics degree level.

GCSEs are exams taken in the UK and elsewhere by students generally aged 15-16. There are several Boards which set GCSE exams. My playlist covers material at GCSE Level generally. It does not follow a particular Board's syllabus. It is intended as a revision guide and students can assess whether the material in my videos covers the ground in their own studies.

A (Advanced) Levels are exams taken in the UK and elsewhere by students generally aged 17-18. They are the exams taken immediately before, and the results of which usually determine entrance to university. There are several Boards which set A level exams. My playlist covers material at Advanced Level generally. It does not follow a particular Board's syllabus. Nor does it separate out the AS and A2 level subjects. It is intended as a revision guide and students can assess whether the material in my videos covers the ground in their own studies.

I do not envisage that these videos should replace a course of proper instruction. The GCSE playlist, A Level playlist and associated A level Questions playlist at best form material suitable for revision where the full course has already been taught. Other more advanced videos are intended as a basic introduction to the subject and to provide a more accessible introduction to the material which will be covered in greater depth in a degree course.

The full set of playlists are set out below. Click on the playlist headings below to go to the relevant YouTube playlist from where you will be able to select the appropriate video in the playlist. The videos are listed below in the same order that they appear in the playlists.

A Level Physics Revision

Classical Mechanics - A Level Physics
A Level Physics revision: Classical mechanics - covering Newton's Laws, velocity, acceleration, force, energy, momentum, impulse, moments and torques.

Moments, Torques and Levers - A Level Physics
An A Level Physics revision video covering Moments, Torques and Levers

Momentum in 2D - A Level Physics
A explanation of how to calculate momentum in 2 dimensions.

Projectile Motion - A Level Physics
A description of projectile motion, how a bullet or ball fired at an angle to the horizontal will travel through the air, and how to describe its trajectory.

Circular Motion - A Level Physics
Consideration of Circular Motion, orbital speed, angular speed, centripetal acceleration and force - with some worked examples

Friction - A Level Physics
A description of friction, the coefficient of friction and friction on an inclined plane. Also covers slides or topples criteria.

Banked Turns - A Level Physics
Building on Circular Motion and Friction to show how an inclined (banked) turn can increase the maximum safe velocity of the turn. It features in some A Level equivalent courses.

Pulleys - A Level Physics
A review of pulleys, mechanical advantage, an inclined surface and gears. This is not part of the physics syllabus for many A level boards, but may be included in some Applied Maths courses.

Hooke's Law and Young's Modulus - A Level Physics
A description of Hooke's Law, the concepts of stress and strain, Young's Modulus (stress divided by strain) and energy stored in a stretched material

Simple Harmonic Motion
A description of Simple Harmonic Motion, including its definition, and examples of SHM in the form of oscillating springs and pendulums.

Waves - A Level Physics
Continuing the A Level revision series with Waves. Looking at transverse and longitudinal waves, the electromagnetic spectrum, polarisation, interference, the single slit and double slit experiments, a diffraction grating, refraction and refractive indices.

Electricity - A Level Physics
Looking at the basic principles of electricity: current, voltage, resistance, power, KIrchhoff's rules

Potentiometers, Rheostats and Potential Dividers - A Level Physics
An A Level Physics revision video covering Potentiometers, Rheostats and Potential Dividers

Gravitational Fields - A Level Physics
Continuing the A Level revision series covering, fields, the gravitational field, the gravitational constant (G), gravitational potential energy, gravitational potential, the velocity and period of masses in orbit, geosynchronous satellites, Kepler's laws and escape velocity

Electric Fields - A Level Physics
Continuing the A Level Physics revision series looking at Electric fields, covering Coulomb's law, Electric field,. Electric Potential Energy, Electric Potential and the similarities with a gravitational field.

Capacitors - A Level Physics
Continuing the A Level revision series looking at Capacitors. Includes capacitance, how a capacitor works, the energy stored in a capacitor and the time for a capacitor to charge and discharge.

Electromagnetism - Part 1 - A Level Physics
Continuing the A Level Physics revision series, this video looks at Electromagnetism covering the magnetic field, the force when a current moves along a wire in a magnetic field and electromagnetic induction.

Electromagnetism - Part 2 - A Level Physics
A continuation from Electromagnetism - Part 1 - A Level

Alternating Current - A Level Physics
A description of AC electricity - its sine wave function, generation, power, root mean square, transformers, transmission and rectification

Digital Imaging - A Level Physics
An A Level Physics revision video covering Digital Imaging

Digital Sampling, Signal Spectra and Bandwidth - A Level Physics
An A Level Physics revision video covering Digital Sampling, Signal Spectra and Bandwidth

Geometric Optics - A Level Physics
Continuing the A Level Physics revision series with geometric optics. The lens formula. Real and virtual images. Convex and Concave lenses and mirrors.

Telescopes - A Level Physics
Continuing the A Level Physics Revision series, and building on the Geometric Optics video, this looks at Telescopes.

Fluid Dynamics 1 - Archimedes Principle - A Level Physics
Describes atmospheric pressure, pressure in a fluid, measuring density of unknown fluid, barometers, hydraulics and Archimedes principle.

Fluid Dynamics 2 - Bernoulli's Principle and Stokes' Law
The second video on fluid dynamics covering Bernoulli's Principle (flows through a pipe) and Stokes' Law (viscosity)

Thermodynamics - A Level Physics
Continuing the A Level Physics revision series with Thermodynamics and Thermal Physics - covering Boyle's, Charles' and the Pressure Laws, the 4 laws of Thermodynamics and Specific Heat

Superconductivity - A Level Physics
A description of superconductivity - in a little more detail than you need at A Level - to explain the basic concepts of a quantum mechnical phenomenon.

Charge and Mass of an Electron - A Level Physics
Continuing the A Level Physics revision series, this video covers, cathode rays, J J Thomson's experiment, Thermionic emission, an electron volt, measuring the charge to mass ratio for an electron and Millikan's oil drop experiment to measure the charge on an electron.

Wave Particle Duality - A Level Physics
Continuing the A Level Physics revision series looking at wave particle duality, covering the original "views" of Newton and Huygens about light being a particle or wave; Young's double slit experiment which appeared to resolve the issue; the photoelectric effect and Einstein's explanation which unresolved it; and DeBroglie's hypothesis that matter could also behave like particles and waves.

The Sum over Paths Theory - A Level Physics
An A Level Physics revision video covering The Sum over Paths Theory

Atomic Structure - A Level Physics
Continuing the A Level Physics revision series looking at Atomic Structure, including the formula for the allowed energy levels for an electron in a Hydrogen atom and how this fits in the with observed spectral lines from Hydrogen. Also includes a brief description of the operation of a laser.

An Introduction to Logic Gates
A simple introduction to logic gates, covering transistors, Boolean Algebra, AND OR NOT NOR NAND XOR and XNOR gates and how to build a very basic computer.

The nuclear radius - A Level Physics
The nuclear radius: its measurement using alpha particle and electron scattering and nuclear density.

Nuclear Physics - A Level Physics
Continuing the A Level Physics revision series looking at nuclear physics including the nuclear radius and density and the strong interaction

Nuclear Fission and Radioactivity - Part 1 of 3
Describes the process of radioactive decay and nuclear fission including the calculation of half lives.

Nuclear Fission and Radioactivity - Part 2 of 3
Describes the process of radioactive decay and nuclear fission including the calculation of half lives.

Nuclear Fission and Radioactivity - Part 3 of 3
Describes the process of radioactive decay and nuclear fission including the calculation of half lives.

Nuclear Fusion - Part 1 of 2
Describes the process of nuclear fusion and its associated release of energy and one developing nuclear fusion power generator, JET.

Nuclear Fusion - Part 2 of 2
Describes the process of nuclear fusion and its associated release of energy and one developing nuclear fusion power generator, JET.

Elementary Particles - A Level Physics
Continuing the A Level Physics revision series looking at elementary particles and the Standard Model, including quarks, leptons and gauge bosons

Exchange Particles and Feynman Diagrams - A Level Physics
Continuing the A Level Physics revision series looking at Exchange Particles and Feynman Diagrams, including gauge bosons, the virtual photon, the gluon and the W and Z bosons.

Star Classification - A Level Physics
Star classification covering luminosity, intensity, apparent and absolute magnitude, standard candles, spectral classification, Wien's Law, Stefan's Law and the Hertzsprung Russell diagram

Parallax - A Level Physics
A desciption of stellar parallax which enables distances to nearby stars to be calculated

Olbers' Paradox - A Level Physics
Olbers' Paradox - why is the sky dark at night - explained

Hubble, Big Bang and The Age of the Universe - Part 1
The derivation of Hubble's equation from the Doppler effect, the deduction of an expanding universe from a Big Bang and a calculation of the age of the universe.

Hubble, Big Bang and The Age of the Universe - Part 2
The derivation of Hubble's equation from the Doppler effect, the deduction of an expanding universe from a Big Bang and a calculation of the age of the universe.

Hubble, Big Bang and The Age of the Universe - Part 3
The derivation of Hubble's equation from the Doppler effect, the deduction of an expanding universe from a Big Bang and a calculation of the age of the universe.

From the Big Bang to Now
An explanation of what happened in the early stages after the big bang, and the evidence for it.

How Big is the Universe? Part 2 of 2
An explanation of the size of the observable universe and why we cannot see beyond it. together with a forward look to a time when distant galaxies will no longer be visible.

How Big is the Universe? Part 1 of 2
An explanation of the size of the observable universe and why we cannot see beyond it. together with a forward look to a time when distant galaxies will no longer be visible.

Special Relativity - A Level Physics
An introduction to special relativity, including the Lorentz transform, length contraction, time dilation and E=mc^2

Sensors: Direct sensing - A Level Physics
Part 1 of 2: What a direct sensor is, how to incorporate it in a circuit such that it can cause action to happen when external circumstances (light levels, temperature, pressure) change.

Sensors: Direct Sensing - A Level Physics Part 2
Part 2 of 2: What a direct sensor is, how to incorporate it in a circuit such that it can cause action to happen when external circumstances (light levels, temperature, pressure) change.

X Rays - A Level Physics
A basic description of the production of X rays for medical use in remote sensing. Part of the A Level Physics revision series.

CT (Computed Tomography) Scans - A Level Physics
A basic description of the mechanism of CT (computed tomography) scans for medical use in remote sensing. Part of the A Level Physics revision series.

Ultrasound and Magnetic Resonance Imaging - A Level Physics
A very simple and basic overview of two methods of indirect sensing used in medical diagnosis work.

Telecommunications - A Level Physics
A description of telecommunications: AM and FM; use of carrier waves; analog and digital signals; broadcast options; satellite transmission; gain and attenuation; PSTN; mobile/cell phones and networks.

GCSE Physics Revision

Speed, Velocity, Acceleration & suvat: GCSE revision
GCSE level Classical Mechanics covering, distance, speed, velocity, time and acceleration and the 4 suvat equations.

Newton's Laws of Motion: GCSE revision
GCSE level Classical Mechanics covering, Newton's Laws of Motion, Force, Gravity, Resultant Force, Mass, Weight, Triangle of Forces, Terminal Velocity, Stopping Distance, Thinking Distance & Braking Distance

Work & Energy: GCSE revision
GCSE level Classical Mechanics covering: Work, Potential Energy, Kinetic Energy, Elasticity

Power: GCSE revision
GCSE level Classical Mechanics covering: Power

Momentum: GCSE revision
GCSE level Classical Mechanics covering: Momentum and Car Safety

Turning Forces: GCSE revision
GCSE level Classical Mechanics covering: Moments, Centre of Mass, Levers, Stability

Archimedes' Principle: GCSE revision
GCSE level Classical Mechanics covering: Archimedes' Principle

Hydraulics: GCSE revision
GCSE level Classical Mechanics covering: Hydraulics

Circular Motion: GCSE revision
GCSE level Classical Mechanics covering: Circular Motion

Projectile Motion: GCSE revision
GCSE level Classical Mechanics covering: Projectile Motion

Static Electricity: GCSE revision
GCSE level Electricity covering: Electricity, electrons, insulators and conductors

Ohm's Law V = I R: GCSE revision
GCSE level Electricity covering: Ohm's law, voltage, current and resistance

Electric Circuits in Series: GCSE revision
GCSE level Electricity covering: Resistances in Series

Electric Circuits in Parallel: GCSE revision
GCSE level Electricity covering: Resistances in Parallel

Electrical Power: GCSE revision
GCSE level Electricity covering: Electrical power and its definition

Potential Dividers: GCSE revision
GCSE level Electricity covering: Potential Dividers and how to produce an output voltage which is lower than an input voltage.

Magnetic Fields and Motors: GCSE revision
GCSE level Electricity & Magnetism covering: Magnetic Fields, Electromagnetism, and Motors

Electromagnetic Induction and Generators: GCSE revision
GCSE level Electricity & Magnetism covering: Electromagnetic induction, Induced currents and Electric generators

Transformers: GCSE revision
GCSE level Electricity & Magnetism covering: Transformers (step up and step down)

Alternating Current, National Grid and Domestic Electricity: GCSE revision
GCSE level Electricity & Magnetism covering: Alternating Current, National Grid and Domestic Electricity

Rectifiers and Capacitors: GCSE revision
GCSE level Electricity & Magnetism covering: Rectifiers and Capacitors

Waves - properties: GCSE revision
GCSE level Waves covering: Waves, sine wave, reflection, transverse wave, longitudinal wave, wavelength, frequency, period, amplitude, peak, trough, crest, vibrations, compressions, rarefactions, speed, object, image, ray, incident ray, reflected ray, hertz, hz, wave equation

Refraction: GCSE revision
GCSE level Waves covering: Refraction, incident ray, refracted ray, spreading out, total internal reflection, refractive index, endoscope, optical fibre, critical angle, speed of light, Snell's law

Diffraction, Interference & Polarisation: GCSE revision
GCSE level Waves covering: Diffraction, interference, polarisation, incident ray, refracted ray, spreading out, single slit, double slit, Young's Double Slit, refractive index, fringes, speed of light, polariser, polarised light, polaroid

Electromagnetic Waves: GCSE revision
GCSE level Waves covering: Light, X-Ray, Gamma Ray, Ultra-violet, UV, Infra-red, Microwaves, Radio waves, UHF, VHF, Short wave, Medium Wave, Long Wave, communication, satellite, mobile phone, remote control, optical fibre, total internal reflection, photography, signal, lasers, receivers, radio telescopes, dish, speed of light

Optical Lens: GCSE revision
GCSE level Waves covering: converging lens, diverging lens, focus, focal point, principal focus, object, image, virtual image, ray diagram, magnification, power, eye, correcting vision, cornea, iris, intensity, retina, light sensitive cells, camera, projection, telescope, lens equation, eye defects

Heat and Energy: GCSE revision
GCSE level Heat covering: radiation,conduction, convection, kinetic energy, heat, energy, infrared, electromagnetic waves, solids, liquids, gases, heat flow, immersion heater, radiator, kinetic theory, temperature, Kelvin, absolute zero, gas pressure, states of matter

Changing States of Matter: GCSE revision
GCSE level Heat covering: condensation, evaporation, heat transfer, liquid, gas, kinetic energy, steam, water, evaporate, condense, density, surface area, airflow, vacuum flask, melting, boiling

Specific Heat: GCSE revision
GCSE level Heat covering: intermolecular bonds, latent heat, latent heat of melting, latent heat of boiling, specific heat

Energy Transfer and Efficiency: GCSE revision
GCSE level Heat covering: electrical, light, sound, kinetic, nuclear, thermal, gravitational, elastic, chemical, conservation of energy, energy transfer, efficiency, useful energy out, total energy in, waste energy, cost effectiveness, sankey diagrams, effectiveness, cost effectiveness, loft insulation, cavity wall insulation, hot water tank jacket, double glazing, draught proofing, payback time, initial cost, annual saving, U-value, heat flow, lagging, energy, thermograms

Gas laws: GCSE revision
GCSE level Heat covering: pressure, volume, temperature, Boyles Law, Charles Law, pressure law, gas equation, force, area

Atomic Structure: GCSE revision
GCSE level Atomic & Nuclear covering: Rutherford scattering, Rutherford, plum pudding, Dalton, Marsden, Democritus, J J Thomson, electron, alpha particle, gold foil, nuclear model, proton, neutron, charge, nucleons, ion, chemical symbol, nucleon number, proton number, mass number, atomic number

Radioactivity and Radiation: GCSE revision
GCSE level Atomic & Nuclear covering: isotopes, radioactivity, radiation, background radiation, carbon-12, carbon-14, alpha, beta, gamma, ionising radiation, helium nucleus, penetration, alpha decay, beta decay, electric field, magnetic field, radiation dose, radon gas

Use of Radiation and Radiation Safety: GCSE revision
GCSE level Atomic & Nuclear covering: smoke detector, tracer, radiotherapy, sterilisation, safety, precautions, industrial, medical

Half Life: GCSE revision
GCSE level Atomic & Nuclear covering: radioactivity, half life, becquerel, activity, unstable, Geiger counter, exponential decay, helium nucleus

Nuclear Fission: GCSE revision
GCSE level Atomic & Nuclear covering: nuclear, fission, splitting, large nuclei, chain reaction, slow-moving neutron, uranium, plutonium, radioactive, nuclear bomb, nuclear fuel, decommissioning, catastrophe, control rods, nuclear reactor

Nuclear Fusion: GCSE revision
GCSE level Atomic & Nuclear covering: nuclear, fusion, energy, high temperature, hydrogen, small nuclei, helium, cold fusion

Particle accelerators: GCSE revision
GCSE level Atomic & Nuclear covering: particle accelerators, particles, leptons, quarks, electron, neutrino, up quark, down quark, protons, neutrons, linear accelerator, cyclotron, magnet, CERN, large hadron Collider, LHC

The origin of the universe: GCSE revision
GCSE level Cosmology covering: Universe, Origin, Big Bang, Steady State, Expansion, Doppler shift, red shift, CMBR, Cosmic Microwave Background Radiation, galaxies, light years

Life Cycle of Stars: GCSE revision
GCSE level Cosmology covering: Star life cycle, Life Cycle, Protostar, Main sequence, red giant, neutron star, black hole, supernova, fusion

The Solar System: GCSE revision
GCSE level Cosmology covering: solar system, Galileo, Copernicus, Solar System, Sun, Planets, Comets, asteroids, meteorites, gravitational attraction, orbits, near earth objects, NEO, moon, milky way

Gravity and Satellites: GCSE revision
GCSE level Cosmology covering:gravity, satellites, inverse square, centripetal force, communications satellites, weather satellites, microwaves, dish aerial, mobile phone

The Universe: GCSE revision
GCSE level Cosmology covering:universe, galaxy, stars, fermi paradox, alien life, sun, milky way, andromeda, light year, nearest star

X-rays: GCSE revision
GCSE level covering: x-rays, x-ray production, cathode, anode, tungsten, energy, breaking radiation, Bremsstralung, frequency, absorption, bone, tissue, images, medical diagnosis, CT scan, CAT scan, fluoroscopy, ionisation, safety precautions, CCD, charge coupled device, pixels, semiconductor, dosage, Sievert, Sv

Sound & Ultrasound: GCSE revision
GCSE level covering: ultrasound, longitudinal waves, compression, rarefaction, velocity, frequency, wavelength, middle C, hertz, kilohertz, megahertz, gigahertz, media, kidney stones, prenatal scans, oscilloscope, SONAR, depth

Heart, ECG and pulse oximetry: GCSE revision
GCSE level covering: heart, ECG, pulse, oximetry, body, lungs, atrium, ventricles, blood, oscilloscope, electrocardiogram, haemoglobin, oxyhaemoglobin, reduced haemoglobin, absorption, saturated, visible light, infrared, IR

Logic gates: GCSE revision
GCSE level covering: logic gates, silicon, doped, NPN, diode, transistor, switch, thermistor, And Gate, not gate, or Gate, nand gate, nor gate, warning system, relay

Analogue and digital signals: GCSE revision
GCSE level covering: analogue, digital, oscilloscope, sound recording, amplification, multiplex, resolution, frequency, sampling rates

Energy sources: GCSE revision
GCSE level covering: Energy sources, nonrenewable, coal, oil, gas, nuclear, environment, wind, waves, tight, hydroelectric, solar, geothermal, food, biofuel, boiler, turbine, generator, windmills, solar cells, pumped storage

Humans and the environment: GCSE revision
GCSE level covering: Humans, environment, nuclear reactors, nonrenewables, fossil fuels, coal, oil, gas, CO2, carbon dioxide, greenhouse effect, acid rain, Global warming, sulphur dioxide, coal mining, landscape, carbon neutral, carbon capture, setup costs, reliability, running costs, location issues, environmental issues, ultraviolet, ozone, sun protection, hole in the ozone layer, antarctica

Seismic waves and infra sound: GCSE revision
GCSE level covering: seismic waves, infra Sound, earthquake, p-wave, s-wave, transverse, longitudinal, seismograph, tsunami, crust, mantle, magma, outer core, inner core, refraction

The scientific process: GCSE revision
GCSE level covering: Scientific process, hypothesis, experiment, evidence, sample, repeatable, reproducible, valid, bias, its use, unanswered questions, investigation, prove or disprove, control variables, trial runs, hazardous, data, reliable, accurate, precise, error, and normally, organised, process, presentation, conclusions, correlation, assessment


A Level Physics Exam Questions Examples

AS Physics Exam Questions: Classical Mechanics
Examples of exam questions at Physics AS level for Classical Mechanics covering Edexcel, AQA and OCR material.

AS Physics Exam Question: Electricity
Examples of exam questions at Physics AS level for Electricity covering Edexcel, AQA and OCR material.

AS Physics Exam Question: Materials
Examples of exam questions at Physics AS level for Materials (Hookes Law, Youngs Modulus, Viscosity) covering Edexcel, AQA and OCR material.

AS Physics Exam Questions: Waves
Examples of exam questions at Physics AS level for Waves covering Edexcel, AQA and OCR material.

AS Physics Exam Questions: Quantum Phenomena
Examples of exam questions at Physics AS level for Quantum Phenomena covering Edexcel, AQA and OCR material.

A2 Physics Exam Questions: Classical Mechanics
Examples of exam questions at Physics A2 level for Classical Mechanics covering Edexcel, AQA and OCR material.

A2 Physics Exam Questions: Fields
Examples of exam questions at Physics A2 level for Gravitational and Electric Fields covering Edexcel, AQA and OCR material.

A2 Physics Exam Questions: Capacitance
Examples of exam questions at Physics A2 level for Capacitance covering Edexcel, AQA and OCR material.

A2 Physics Exam Questions: Electromagnetism
Examples of exam questions at Physics A2 level for Electromagnetism covering Edexcel, AQA and OCR material.

A2 Physics Exam Questions: Quantum, Nuclear, Particles
Examples of exam questions at Physics A2 level for Quantum, Nuclear, Particles covering Edexcel, AQA and OCR material.

A2 Physics Exam Questions: Thermal Physics
Examples of exam questions at Physics A2 level for Thermal Physics covering Edexcel, AQA and OCR material.

Atomic Physics

Atomic Physics 1: Quantum Numbers
Video 1 on Atomic Physics which sets out the four quantum numbers, the Pauli Exclusion Principle, the order of filling electron shells and the ordering of elements in the Periodic Table.

Atomic Physics 2: Bonding
This second video in the series shows how the electron configurations leads to chemistry and the bonding of elements. The difference between conductors and insulators is explained.

Atomic Physics 3: Semiconductors, Diodes and Transistors
Video 3 in the series shows how semiconductors (Silicon) can be produced as diodes and transistors and how this all arises as a consequence of quantum mechanics.

Electricity & Magnetism

Electricity - A Level Physics
Looking at the basic principles of electricity: current, voltage, resistance, power, KIrchhoff's rules

Electric Fields - A Level Physics
Continuing the A Level Physics revision series looking at Electric fields, covering Coulomb's law, Electric field,. Electric Potential Energy, Electric Potential and the similarities with a gravitational field.

Electromagnetism - Part 1 - A Level Physics
Continuing the A Level Physics revision series, this video looks at Electromagnetism covering the magnetic field, the force when a current moves along a wire in a magnetic field and electromagnetic induction.

Electromagnetism - Part 2 - A Level Physics
A continuation from Electromagnetism - Part 1 - A Level

Capacitors - A Level Physics
Continuing the A Level revision series looking at Capacitors. Includes capacitance, how a capacitor works, the energy stored in a capacitor and the time for a capacitor to charge and discharge.

Capacitors and Dielectrics
Following on from the video on Capacitance this video answers questions about the role of the dielectric.

Transformers and effect of eddy currents
This deals with a question about the electromagnetism video and concerns the effect of eddy currents in the core of a transformer

Superconductivity - A Level Physics
A description of superconductivity - in a little more detail than you need at A Level - to explain the basic concepts of a quantum mechnical phenomenon.

Maxwell's Equations - Basic derivation
A basic derivation of the four Maxwell equations which underpin electricity and magnetism.

Alternating Current - A Level Physics
A description of AC electricity - its sine wave function, generation, power, root mean square, transformers, transmission and rectification

Resistance, Reactance and Impedance
Electrical Resistance, Reactance and Impedance, including resonance in LRC circuits.

What is light?
Part 1 of a series on electromagnetic radiation, demonstrating from Maxwell's equations that light is electromagnetic radiation, and how it is propagated.

The Poynting Vector
Part 2 of a series on electromagnetic radiation: the Poynting Vector - which indicates the Intensity of EM radiation. Covers energy in electric and magnetic fields and the derivation of the Poynting Vector.

The Fresnel Equations
Part 3 of a series on electromagnetic radiation: The Fresnel Equations - deriving from Maxwell's equations the boundary conditions when EM radiation passes between two dielectrics and deriving the Fresnel equations which describe the proportion of the E vector which is reflected or refracted.
Part 1: The Boundary Conditions
Part 2: Deriving the Fresnel Equations

Polarisation
Part 4 of a series on electromagnetic radiation: Polarisation - explains how EM radiation can be polarised and the Intensity of EM radiation which passes through a polariser. Includes Rayleigh scattering and why the sky is blue during the day and red at sunset.

Interaction of EMR with metals
Part 5 of a series on electromagnetic radiation: Interaction of EMR with metals - deriving from Maxwell's equations the boundary conditions when EM radiation travelling in vacuum interacts with a metal (cf dielectric), and demonstrating why the EM radiation is reflected. Includes the operation of a mirror and a polariser.

Wave guides
Part 6 of a series on electromagnetic radiation: Wave guides - how EM radiation travels through a waveguide, group and phase velocity

Absorption of EM radiation
Part 7 of a series on electromagnetic radiation: Absorption of EM radiation - explains how radiation of different frequencies is absorbed including reflection, molecular oscillations, Electron excitation, Photoelectric effect, Compton effect (including deriving the Compton formula) and pair production.

What causes a rainbow
A demonstration of how light passes through and round a raindrop by a combination of refraction and reflection, the slight difference in refractive index for different light colours and the consequence in terms of the rainbow seen in the sky.

Particle Physics

The Standard Model
A brief description of the standard model covering the fundamental particles (quarks, leptons and bosons)

Particle Interactions, QED and QCD: An Introduction - Part 1
A brief introduction to elementary particle interactions and how these can be described by Quantum Electrodynamics and Quantum Chromodynamics.

Particle Interactions, QED and QCD: An Introduction - Part 2
A brief introduction to elementary particle interactions and how these can be described by Quantum Electrodynamics and Quantum Chromodynamics.

Particle Interactions, QED and QCD: An Introduction - Part 3
A brief introduction to elementary particle interactions and how these can be described by Quantum Electrodynamics and Quantum Chromodynamics.

Heisenberg's Uncertainty Principle - Part 1 of 2
An explanation of Heisenberg's Uncertainty Principle, including an illustration based on the single slit experiment

Heisenberg's Uncertainty Principle - Part 2 of 2
An explanation of Heisenberg's Uncertainty Principle, including an illustration based on the single slit experiment

Higgs Boson and Higgs Field
A basic introduction to the Higgs Field and associated Higgs Boson, its purpose and how to find it - if it exists.

Particle Physics 1: Introduction
Part 1 of a series: covering introduction to Quantum Field Theory, creation and annihilation operators, fields and particles.

Particle Physics 2: Creation and Annihilation Operators and Mass
Part 2 of a series: covering creation and annihilation operators, the Pauli Matrices and introducing mass

Particle Physics 3: Angular Momentum and Spin
Part 3 of a series: covering angular momentum

At this stage in this series, for completeness you should watch the videos earlier in this playlist on:
- The Standard Model
- QED and QCD (3 videos)

Particle Physics 4: Rotation Operators, SU(3)xSU(2)XU(1)
Part 4 of a series: covering rotation and SU(3)xSU(2)XU(1)

Particle Physics 5: Basic Introduction to Gauge Theory and Symmetry
Part 5 of a series: covering Gauge Theory, Gauge Invariance, Spontaneous Symmetry Breaking and the Higgs

Particle Physics 6: Particles & Supersymmetry
Part 6 of a series: nature's designer particles and the possibility of supersymmetric particles, SUSY

Thermodynamics

Thermodynamics - A Level Physics
Continuing the A Level Physics revision series with Thermodynamics and Thermal Physics - covering Boyle's, Charles' and the Pressure Laws, the 4 laws of Thermodynamics and Specific Heat

Entropy and the Second Law of Thermodynamics
Deriving the concept of entropy; showing why it never decreases and the conditions for spontaneous actions. Why does heat go from hot to cold and not the other way round?

Blackbody radiation and the UV Catastrophe - Part 1 of 3
A description of the Blackbody and Ultra Violet Catastrophe problem and an indication of how it was the door to the subject of Quantum Mechanics by postulating that light was formed of particles (photons) which were packets (quanta) of energy.

Blackbody radiation and the UV Catastrophe - Part 2 of 3
A description of the Blackbody and Ultra Violet Catastrophe problem and an indication of how it was the door to the subject of Quantum Mechanics by postulating that light was formed of particles (photons) which were packets (quanta) of energy.

Blackbody radiation and the UV Catastrophe - Part 3 of 3
A description of the Blackbody and Ultra Violet Catastrophe problem and an indication of how it was the door to the subject of Quantum Mechanics by postulating that light was formed of particles (photons) which were packets (quanta) of energy.

Nuclear Physics

Nuclear Structure Physics
An introduction to understanding the Strong Nuclear Force and how it is experimentally observed.

The nuclear radius - A Level Physics
The nuclear radius: its measurement using alpha particle and electron scattering and nuclear density.

The Semi Empirical Mass Formula
Describes the SEMF, the Nuclear Binding Energy, stable and unstable nuclei, beta decay, alpha decay, proton emission, neutron emission, fission.

Strength of Nuclear Force
Illustrating the strength of the nuclear force binding nucleons into a nucleus

Nuclear Spin

Nuclear Scattering & Spin

Shape of the Nuclear Potential

The Nuclear Shell Model: An Introduction
A basic introduction to the shell model to explain magic numbers in nuclei.

Spin Orbit Coupling

Extreme Single Particle Model

The Collective Model

Nuclear Fission and Radioactivity - Part 1 of 3
Describes the process of radioactive decay and nuclear fission including the calculation of half lives.

Nuclear Fission and Radioactivity - Part 2 of 3
Describes the process of radioactive decay and nuclear fission including the calculation of half lives.

Nuclear Fission and Radioactivity - Part 3 of 3
Describes the process of radioactive decay and nuclear fission including the calculation of half lives.

Alpha particle decay

Beta particle decay

Gamma Decay

Nuclear Reactions

Why don't all heavy elements decay to Fe56

Fission continued

Nuclear Fission Reactor Principles

Nuclear Fission Reactor Design

Nuclear Fusion - Part 1 of 2
Describes the process of nuclear fusion and its associated release of energy and one developing nuclear fusion power generator, JET.

Nuclear Fusion - Part 2 of 2
Describes the process of nuclear fusion and its associated release of energy and one developing nuclear fusion power generator, JET.

Nuclear Fusion (Continued)

Nuclear Fusion Reactor

Nuclear Fusion In Stars

Classical Mechanics

Classical Mechanics - A Level Physics
A Level Physics revision: Classical mechanics - covering Newton's Laws, velocity, acceleration, force, energy, momentum, impulse, moments and torques.

Projectile Motion - A Level Physics
A description of projectile motion, how a bullet or ball fired at an angle to the horizontal will travel through the air, and how to describe its trajectory.

Circular Motion - A Level Physics
Consideration of Circular Motion, orbital speed, angular speed, centripetal acceleration and force - with some worked example.

Momentum in 2D - A Level Physics
A explanation of how to calculate momentum in 2 dimensions.

Friction - A Level Physics
A description of friction, the coefficient of friction and friction on an inclined plane. Also covers slides or topples criteria.

Pulleys - A Level Physics
A review of pulleys, mechanical advantage, an inclined surface and gears. This is not part of the physics syllabus for many A level boards, but may be included in some Applied Maths courses.

Gravitational Fields - A Level Physics
Continuing the A Level revision series covering, fields, the gravitational field, the gravitational constant (G), gravitational potential energy, gravitational potential, the velocity and period of masses in orbit, geosynchronous satellites, Kepler's laws and escape velocity

Analytical Mechanics
A basic introduction to Analytical Mechanics derived from Newtonian Mechanics, covering the Lagrangian, principle of least action, Euler Lagrange equation and Hamiltonian.

Dynamics of Rigid Rotating Bodies: Part 1 of 3
Part 1: Centre of Gravity, Moment of Inertia, Angular Momentum and Torque

Dynamics of Rigid Rotating Bodies: Part 2 of 3
Part 2: Parallel Axis Theorem and consequences of part 1

Dynamics of Rigid Rotating Bodies: Part 3 of 3
Part 3: Gyroscopes

Special & General Relativity

Special Relativity and E=mc^2 - Part 1 of 5
A simple explanation of Special Relativity covering time dilation, length contraction, the 4 momentum vector and E=mc^2

Special Relativity and E=mc^2 - Part 2 of 5
A simple explanation of Special Relativity covering time dilation, length contraction, the 4 momentum vector and E=mc^2

Special Relativity and E=mc^2 - Part 3 of 5
A simple explanation of Special Relativity covering time dilation, length contraction, the 4 momentum vector and E=mc^2

Special Relativity and E=mc^2 - Part 4 of 5
A simple explanation of Special Relativity covering time dilation, length contraction, the 4 momentum vector and E=mc^2

Special Relativity and E=mc^2 - Part 5 of 5
A simple explanation of Special Relativity covering time dilation, length contraction, the 4 momentum vector and E=mc^2

General Relativity: An Introduction - Part 1 of 2
An introduction to the basic principles of General Relativity including the principle of equivalence, the effect of gravity on light and the first indication of curved spacetime.

General Relativity: An Introduction - Part 2 of 2
Spacetime and the Twins Paradox
An explanation of spacetime, the twins paradox which results from a moving clock running slow, and the possibility of forward time travel - but no return journey!

Moving through Spacetime
Shows how we move through spacetime and that although different observers will disagree about distance, time and speed measurements, there are two quantities on which everyone can agree. Demonstrates that we move…

Curved (Warped) Spacetime
An explanation of curved spacetime, and how the effect of gravity is simply an object travelling in a straight line in curved space.

Einstein Field Equations - for beginners!
Einstein's Field Equations for General Relativity - including the Metric Tensor, Christoffel symbols, Ricci Cuvature Tensor, Curvature Scalar, Stress Energy Momentum Tensor and Cosmological Constant.

Cosmology

How Elements are made
A simple account of how elements are created in various stages in the heart of a star.

Hubble, Big Bang and The Age of the Universe - Part 1
The derivation of Hubble's equation from the Doppler effect, the deduction of an expanding universe from a Big Bang and a calculation of the age of the universe.

Hubble, Big Bang and The Age of the Universe - Part 2
The derivation of Hubble's equation from the Doppler effect, the deduction of an expanding universe from a Big Bang and a calculation of the age of the universe.

Hubble, Big Bang and The Age of the Universe - Part 3
The derivation of Hubble's equation from the Doppler effect, the deduction of an expanding universe from a Big Bang and a calculation of the age of the universe.

From the Big Bang to Now
An explanation of what happened in the early stages after the big bang, and the evidence for it.

How Big is the Universe? Part 1 of 2
An explanation of the size of the observable universe and why we cannot see beyond it. together with a forward look to a time when distant galaxies will no longer be visible.

How Big is the Universe? Part 2 of 2
An explanation of the size of the observable universe and why we cannot see beyond it. together with a forward look to a time when distant galaxies will no longer be visible.

Dark Matter and Galaxy Rotation
Deducing the presence of Dark Matter from the rotational velocities of stars in galaxies.

Dark Energy
A description of dark energy and how it might explain accelerating universe expansion and a simple derivation of the Friedman, Robertson, Walker equation

Black Holes - An Introduction
The basic physics of a black hole, the Schwarzschild radius, energy, temperature, mass and entropy and Hawking radiation

Quantum Mechanics

Schrodinger Equation - A simple derivation
A basic derivation, in one dimension, of the Schrodinger Equations. I assume basic knowledge of algebra and calculus and some general physics. The video is aimed at somewhere between A level and 1st year undergraduate physics.

The Wave Function
An explanation for the general choice of wave function to describe a particle in quantum mechanics

Double & Single Slit Experiments and Diffraction Gratings
Describes the maths of the double and single slit experiments and the operation of the diffraction grating.

Solving Schrodinger for a Hydrogen Atom (cheating) - Part 1
A cheat way to get to the Schrodinger solution for the hydrogen atom - in 3 parts - total time is approx 23 minutes,

Solving Schrodinger for a Hydrogen Atom (cheating) - Part 2
A cheat way to get to the Schrodinger solution for the hydrogen atom - in 3 parts - total time is approx 23 minutes.

Solving Schrodinger for a Hydrogen Atom (cheating) - Part 3
A cheat way to get to the Schrodinger solution for the hydrogen atom - in 3 parts - total time is approx 23 minutes.

The reason for Quantum Mechanics - Part 1 of 3
A historical account of the discovery of the atom and the need for quantum mechanics to explain why atoms do not self-destruct.

The reason for Quantum Mechanics - Part 2 of 3
A historical account of the discovery of the atom and the need for quantum mechanics to explain why atoms do not self-destruct.

The reason for Quantum Mechanics - Part 3 of 3
A historical account of the discovery of the atom and the need for quantum mechanics to explain why atoms do not self-destruct.

An Introduction to Quantum Mechanics
An introduction to the principles of quantum mechanics, including Heisenberg's uncertainty principle and the consequences for momentum and angular momentum being quantised.

Schrodinger Equation for Free Particle and Particle in a Box Part 1

Schrodinger Equation for Free Particle and Particle in a Box Part 2

Schrodinger Equation for Free Particle and Particle in a Box Part 3

Blackbody radiation and the UV Catastrophe - Part 1 of 3
A description of the Blackbody and Ultra Violet Catastrophe problem and an indication of how it was the door to the subject of Quantum Mechanics by postulating that light was formed of particles (photons) which were packets (quanta) of energy.

Blackbody radiation and the UV Catastrophe - Part 2 of 3
A description of the Blackbody and Ultra Violet Catastrophe problem and an indication of how it was the door to the subject of Quantum Mechanics by postulating that light was formed of particles (photons) which were packets (quanta) of energy.

Blackbody radiation and the UV Catastrophe - Part 3 of 3
A description of the Blackbody and Ultra Violet Catastrophe problem and an indication of how it was the door to the subject of Quantum Mechanics by postulating that light was formed of particles (photons) which were packets (quanta) of energy.

The Einstein Podolsky Rosen (EPR) Paradox - A simple explanation
This video responds to a question about the EPR Paradox. It is explained in simple terms (no maths) but requires knowledge of some of the basics of Quantum Mechanics in my other videos. Too simple for experts!

Bell's Inequality
A basic introduction to Bell's Inequality which shows that there cannot be hidden variables (a form of inbuilt DNA), as postulated by EPR, to explain how entangled particles behave.

Schrodinger's Cat
A description of Schrodinger's thought experiment (no cats were harmed) which along with EPR challenged the emerging thinking of quantum mechanics in 1935

Standing (Stationary) Waves
The disctinction between standing and traveling waves; a demonstration of how standing waves are formed; and their application to quantum physics.

Fermi-Dirac and Bose-Einstein statistics - basic introduction
A basic introduction to Fermi-Dirac and Bose-Einstein statistics and a comparison with Maxwell Boltzmann statistics

Quantum Mechanics Concepts: 1 Dirac Notation and Photon Polarisation
Part 1 of a series: covering Dirac Notation, the measurable Hermitian matrix, the eigenvector states and the eigenvalue measured outcomes and application to photon polarisation

Quantum Mechanics Concepts: 2 Photon Polarisation (continued)
Part 2 of a series: continues photon polarisation

Quantum Mechanics Concepts: 3 Electron Spin
Part 3 of a series: application of concepts to electron spin.

Quantum Mechanics Concepts: 4 Position, Momentum and Heisenberg
Part 4 of a series: deriving the position and momentum operators and Heisenberg's Uncertainty Principle.

Quantum Mechanics Concepts: 5 The EPR Paradox explanation
Part 5 of a series: responds to key questions I am asked on my Video on the EPR Paradox.

Quantum Mechanics Concepts: 6 Energy Operators, the Hamiltonian and Schrodinger
Part 6 of a series: setting out the Energy operator, the Hamiltonian and deriving Schrodinger's Equation.

Quantum Mechanics Concepts: 7 The Harmonic Oscillator
Part 7 of a series: explains how the ideas of Simple Harmonic Motion can be carried into Quantum Mechanics

Miscellaneous Click on individual videos below:

Vector Algebra - Addition, Subtraction and Dot & Cross Products
Basic introduction to Vector Algegra. How to add and subtract vectors. The nature and purpose of the dot and cross products

Planck Units - Part 1 of 3
Derivation of Planck Units from the three universal constants G, h and c.

Planck Units - Part 2 of 3
Derivation of Planck Units from the three universal constants G, h and c.

Planck Units - Part 3 of 3
Derivation of Planck Units from the three universal constants G, h and c.