Up Learn – A Level physics (AQA) – Quantum

The Photoelectric Effect and The Wave Model

1. Introduction to the Photoelectric Effect and the Wave Model
2. The Gold Leaf Electroscope
3. Talking About The Photoelectric Effect
4. Photoelectrons’ Maximum Kinetic Energy
5. The Wave Hypothesis and the Photoelectric Experiment
6. Observing the Photoelectric Effect
7. Another Problem For Wave Theorists

The Photoelectric Effect and The Particle Model

1. Introduction to The Particle Theory of Light
2. The Photoelectric Effect and The Wave Theory of Light: Recap
3. Einstein’s Particle Solution
4. The Work Function
5. Different Metals and The Work Function
6. Calculating Photon Energy
7. Calculating Photon Energy – Worked Example
8. Photon Energy and Photoelectron Emission
9. Threshold Frequency
10. Wave Theory and Photons
11. Calculating Photoelectron Energy
12. Calculating Photoelectron Energy – Worked Example
13. Wavelengths of Incident Radiation – Article
14. Wavelength and Photon Energy
15. Kinetic Energy of Photoelectrons – Worked Example
16. Wavelength and Nanometres

The Electron Volt and Stopping Potential

1. Introduction to the Electron Volt and Stopping Potential
2. Photoelectrons Jumping Gaps
3. Voltage and Potential Difference – Article
4. Potential Difference and Repulsion
5. Potential Difference and Net Charge
6. Potential Difference and Work Done – Part 1
7. Kinetic Energy and Photoelectrons – Article
8. Potential Difference and Work Done – Part 2
9. Potential Difference and Work Done – Part 3
10. Initial Kinetic Energy and Maximum Kinetic Energy – Article
11. Stopping Potential – Worked Example
12. Vacuum Photocells – Part 1
13. Vacuum Photocells – Part 2
14. Robert Milikan and Einstein’s Results
15. Photoemissive Surfaces – Article
16. The Electron Volt
17. Understanding The Electron Volt
18. Electron Volts and The Photoelectric Effect – Worked Example

Ionisation

1. Firing Electrons At Atoms
2. Ionisation
3. Ionisation and Gas Filled Tubes (Part 1)
4. Recap Article – Electron Volts
5. Ionisation and Gas Filled Tubes (Part 2)
6. Electron Orbitals
7. Filling Orbitals With Electrons – Article
8. Energy Levels (Part 1)
9. The Ground State
10. Energy Levels (Part 2)
11. Energy Levels (Part 3)
12. Quantisation of Energy
13. Ionisation Energies
14. The Energy of Freed Electrons

Excitation and Photons

1. Introduction to Excitation and Photons
2. Excitation
3. Excitation Energies
4. Article: Quantised Energy Levels – Recap
5. Free Electrons and Excitation
6. Article: Free Electrons With Exact Amounts of Energy
7. De-Excitation and Energy Level Transitions
8. De-Excitation and Photon Emission
9. Wavelength and Electron Volts – Recap
10. De-Excitation Routes – Worked Example
11. Photons and Excitation
12. Differences in Excitation
13. Photons and Ionisation
14. Wavelength of Incoming Radiation – Worked Example

Line Spectra and Fluorescence

1. Introduction: Separating Light
2. The Electromagnetic Spectrum – A Recap
3. Energy Level Diagrams – Recap
4. Photon Emission in Discharge Tubes
5. Emission Spectra
6. Emission Spectra Diagrams
7. Article: Wavelength and Energy – Recap
8. Emission Spectra Diagrams in Electron Volts
9. Emission Spectra Diagrams and Energy Level Diagrams
10. Absorption Spectra – Part 1
11. Absorption Spectra – Part 2
12. Inside The Discharge Tube
13. The Fluorescent Tube

Wave-Particle Duality

1. Huygens vs Newton Reloaded
2. Wave-Particle Duality of Light
3. Waves and Interference Patterns – Recap
4. Marble Diffraction
5. Electron Experimental Results
6. The Electron Diffraction Experiment

De Broglie Wavelengths

1. Introduction: De Broglie Wavelengths
2. Electron Diffraction Experiment – Article
3. Wave-Particle Duality and Fringe Patterns
4. The Maximum Speed of Particles – Article
5. Momentum and Electron Diffraction
6. Momentum, Wavelength and the De Broglie Equation
7. Calculating a de Broglie Wavelength – Worked Example
8. Mass and Wavelength
9. Observable Diffraction – Article