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