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Extra Premium Videos
For those who have signed up for an individual Premium Plan or for School Subscribers
Introduction to Year 13 Physics
Circular Motion

The Radian

Angular Velocity and Tangential Velocity

Examples of Angular Velocity

Centripetal Acceleration and Centripetal Force

Centripetal Force at an Angle

Vertical Circular Motion

Deriving Centripetal Acceleration
Oscillations and Simple Harmonic Motion

'shm' Terminology

Angular Frequency and Phase Difference

The Defining Equation for shm

How to Time an Object in shm

Deriving the Equation for the Velocity of an object in shm

Deriving the Equation for a Simple Pendulum

Deriving the Equation for a MassSpring System

Solutions to the shm Equation x=Asinwt

shm Graphs of Displacement, Velocity and Acceleration

shm  how to time an oscillator

Energy in a Pendulum or Oscillating Horizontal Mass

Energy in a Vertical MassSpring System

Resonance

Damping
Gravitational Fields and Orbits

Gravitational Fields

Newton's Law of Gravitation

Gravitational Field Strength

Kepler's Three Laws

Why T^2 is proportional to r^3

Satellites

Gravitational Potential

Gravitational Potential Energy

Energy of a Satellite

Escape Velocity

Introduction to Electric Fields

Coulomb's Law

Radial Electric Fields

Gravitational vs. Electric Fields

Uniform Electric Field Strength

Parallel Plate Capacitors and Permittivity of Free Space

Capacitance of an Isolated Sphere

Electric Potential and Electric Potential Energy

Charged Particles in Electric Fields

Millikan's Oil Drop Experiment

Magnetic Fields around Permanent Magnets

Fleming's Left Hand Rule

Force equals Bil

Force on charged particles in magnetic fields

Charged Particles in E and B Fields

How do Motors Work?

EM Induction with Faraday's and Lenz's Law

Magnetic Flux and Magnetic Flux Density

The AC Generator

How Transformers Work

The Transformer Equations

Magnetic Field in a Solenoid

Magnetic Field around a Wire

Inside a Capacitor

Capacitors in Series and Parallel

Energy in a Capacitor

The Time Constant. RC Circuits, and Exponential Discharge

Charging a Capacitor

Uses of a Capacitor

RMS Values

Rectifying Circuits
Particle Physics and Radioactivity

Rutherford's Alpha Scattering Experiment

The A to Z of Isotopes

Size, Mass and Density of the Nucleus

What Holds the Nucleus Together?

The Standard Model of Physics

Baryons and Mesons

Beta Decay and its Nuclear Equations

Electron Capture

Feynman Diagrams

Why is there Radioactive Decay?

Alpha, Beta, Beta and Gamma Radiation

Range and Penetration

How to Use radioactive Sources

Cup Sources

Alpha Particles in a Cloud Chamber

The Spark Counter

Exponential Decay with Skittles

Activity and Decay Constant

Exponential Decay Equations

Half Life

Mass Defect and Einstein's Equation

Binding Energy and why things Fuse or Fission

Carbon Dating

Induced Fission

The Fission Reactor

Fusion and the ProtonProton Chain

The GeigerMuller Tube
Thermal Physics and Ideal Gases

Temperature and the Absolute Thermodynamic Scale

Solids, Liquids and Gases

Brownian Motion

The difference between Heat and Temperature

How Temperature changes with Internal Energy

Specific Heat Capacity

Latent Heat

The Mole

Pressure of a Gas

Boyle's Law

Derivation of pV=nRT

Boltzmann's Constant

Assumptions for the Kinetic Theory of Ideal Gases

Pressure and Temperature for an Ideal Gas

Derivation of pV=1/3Nmc^2

MaxwellBoltzmann Distribution

Ideal Gas Equation and the Molar Gas Constant

Temperature and the Average Kinetic Energy of a Gas Particle
Astrophysics

Objects in the Universe

Formation of Stars

Evolution of Low Mass Stars

Evolution of Massive Stars

The HertzsprungRussell Diagram

Electron Energy Levels

Continuous, Emission and Absorption Line Spectra

Wien's Displacement Law

Stefan's Law

The Astronomical Unit, Light Year and Parsec

Stellar Parallax

The Doppler Effect and Redshift

The Cosmological Principle

Olber's Paradox

Hubble's Constant and the Big Bang

Calculating the Age of the Universe

The Big Bang

Evolution of the Universe

Derivation of Critical Density

Fate of the Universe

Dark Matter and Dark Energy
Telescopes

Astronomical Refracting Telescopes

Magnification of Refracting Telescopes

Cassegrain Reflecting Telescopes

Refracting vs. Reflecting

Radio, IR, UV and Xray Telescopes

Rayleigh Criterion

Quantum Efficiency, CCDs and the Eye
Medical Physics

Xray Production and Machines

Xray Absorption and Attenuation

Xray Interactions (Photoelectric, Compton and Pair Production)

Xray Image Intensifiers

CAT Scanners

Medical Tracers

The Gamma Camera

PET Scanners

Ultrasound A and B Scans

Ultrasound Acoustic Impedance

Ultrasound Doppler Sonography

MRI Principles

MRI Machines

MRI Advantages and Disadvantages
Rotational Dynamics

Rotational Kinetic Energy

Moment of Inertia

Angular Acceleration

Torque

Work and Power

Rotational Equations

Angular Momentum

Translations vs. Rotational
Thermodynamics

1st Law of Thermodynamics

Isothermal Changes

Adiabatic Changes

Constant Pressure and Volume Changes

Work Done by a Gas

Heat Engines

Petrol Engines and the Otto Cycle

Diesel Engines

Heat Engine Thermal Efficiency

Overall Engine Efficiency

Reversed Heat Engines (Fridges and Heat Pumps)
Turning Points

Thermionic Emission

Forces on a Moving Charge

Electron Tubes

Measuring the Charge to Mass with a Deflection Tube

Measuring the Charge to Mass Ratio with a Fine Beam Tube

Thomson's Value of e/m

Millikan's Oil Drop Experiment

Newton's Corpuscles of Light

Huygens' Wave Theory

Young's Fringes

Maxwell's EM Waves

Hertz's Radio Waves

The MichelsonMorley Experiment

Special Relativity

Gamma Factor and Time Dilation

Muons and Time Dilation

Length Contraction

The Twins Paradox

Relativistic Mass
Worked Example Exam Questions

Newton's Laws and Forces

VelocityTime Graphs, Energy and Work Done

Acceleration due to Gravity and Resultant Force

Upthrust and Identifying Forces

Total Internal Reflection and Refractive Index

Path and Phase Difference, Superposition and Interference

Diffraction of Radio Waves and Energy of a Photon

Lamps in Series and Parallel, IV Characteristics of a Lamp

Measuring Density Practical

Standing Wave in a Tube Practical

Ball Drop Practical

Resistivity Practical

Magnetic Fields and Electrons

Alpha Scattering Experiment

Particle Accelerators

Capacitors

Fusion in stars and on Earth

Pulsars, Circular Motion and the Doppler Effect

Doppler effect and Light

Kinetic Theory

Resonance of a String

Circuits with I, V and Natural Logs

Data Analysis

Gamma Absorption