Post on 07-Feb-2021
QUANTUM THEORY & PHOTONS
Questions 21-55
QUANTUM THEORY & PHOTONS
• The Photon
• 𝐸𝑃ℎ𝑜𝑡𝑜𝑛 = ℎ𝑓
• Compton Effect
• Matter Waves
• λ =ℎ
𝑝
THE PHOTON
• Light is Electromagnetic Energy
• It exists in small bundles or packets
• Photon - Photons
• Quantum - Quanta
https://www.youtube.com/watch?v=dbn-Ox1XawI
THE PHOTON
𝐸𝑝ℎ𝑜𝑡𝑜𝑛 = ℎ𝑓
• 𝐸𝑝ℎ𝑜𝑡𝑜𝑛 = the energy of a photon (Joules)
• ℎ = Planck’s Constant
• 𝑓 = the frequency of the photon (Hertz)
THE ELECTROMAGNETIC SPECTRUM
Increasing
Energy
COMPTON EFFECT
• Waves ACT like Particles
• Bombarded Graphite with X-Rays
• Scattered X-Rays and Electrons
• Scattered X-Rays were of a Lower Frequency
MATTER WAVES
• Louis De Broglie
• Particles ACT like Waves
• Electrons and Neutrons
• Diffraction Patterns
CONSERVATION
• Particles ACT like Waves
• Waves ACT like Particles
• Momentum is
Conserved
• Energy is Conserved
λ =ℎ
𝑝
• λ = wavelength (meters)
• ℎ = Planck’s Constant
• 𝑝 = momentum (𝑘𝑔 ∙ Τ𝑚 𝑠)
QUANTUM THEORY & PHOTONS
Questions 21-55