Introduction to Modern Physics

showmethephysics.com / Assessment

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Fill In The Blank Notes

Modern Physics - 20th Century

• fundamental nature of light & electromagnetic radiation

• origins & destiny of universe

• parts of the atom

• how energy is absorbed and emitted by electrons

• gravity

I. Dual Nature of Light - Light appears to exhibit 2 characteristics:

Wave or Particle????

A. Review - 19^th Century

Experiments Supporting Wave Theory

"What wave behavior is displayed below?"

(onsite version)

1) Interference - "Double Slit Exp." - constructive/ destructive

2) Polarization - "Filtering of Light - Light waves have orientations

"Actually a picket fence couldn't polarize light. Why?"

"The slits in a picket fence are too large to polarize light"

"Which  wave behavior is shown below?"

| Onsite Version |

 3) Diffraction - Spreading out of Light behind a barrier

4) Doppler - Color Shift of Light - "Blue to, Red Away"

Photoelectric Effect

Review

Explain This!

Show Me Physics
YouTube Channel

School blocks YouTube?

Use the link below

OverlappingSoundsPartI.mp4