1. Welcome to Physics is Phun Please take ONE grating from trays by doors as you come in.

2. Please be Seated

3. The Atom Physics is Phun January 2008

4. The Elements by Tom Lehrer Animation by Flashimation Mike Stanfill, Private Hand 2330 Jonesboro, Dallas, TX 75228 214-320-2293 www.privatehand.com

5. The Electromagnetic Spectrum c = f c = speed of light f = frequency  = wavelength

7. Duality of Light Light as Waves Light as particles – “photons”

8. Photons and the Photoelectric Effect E = h  = photon energy h = Planck/s constant  = photon or light frequency

9. Boiling WaterElectrons in Metal Photons Water Electrons The Photoelectric Effect Figure compliments of Kynningarvefur Eðlisfræðiskorar: http://erik.raunvis.hi.is/nam/

11. Atomic Structure 1.Nucleus with protons and neutrons 2.Electrons surround nucleus 3.Energy levels and the Periodic Table of Elements 4.Electron transitions

12. Periodic Table of the Elements © 2000 ChemGlobe, periodictable@gmx.net

13. Atomic and Molecular Spectra 1. The Hydrogen Balmer series 2. Mercury vapor spectrum 3. Cadmium vapor spectrum 4. Sodium vapor spectrum 5. Molecular Iodine

15. Hydrogen Atomic Energy Levels

17. Sodium spectrum

18. Fraunhofer Spectrum

19. Atomic Phenomena 1.Fluorescence 2. Phosphorescence “delayed fluorescence”

21. Applications 1.Lasers 2. Neon signs 3. Fluorescent lights

23. Light Amplification by Stimulated Emission of Radiation

24. Helium-Neon Laser

25. HeNe Laser Energy Level Diagram

26. HeNe Laser and LED Spectra HeNe Laser RYB Light-Emitting Diodes

30. We are on the web at http://www.physics.umd.edu/lecdem/ Animated Gifs compliments of bellsnwhistles.com The End See you in March!