Science Olympiad

1. Science Olympiad Optics Color and Shadows

2. The Electromagnetic Spectrum.

3. Behavior of Light: Shadows - One Light Bulb Use rays to predict what one would observe if there was one light source. Draw the “kissing” rays. The rays that just clear the barrier. Light Shadow Barrier Light So, what do we see on the screen?

4. Behavior of Light: Shadows - One Light Bulb Use rays to predict what one would observe if there was one light source. There are many rays that leave the light bulb that go in all directions. Light Shadow Barrier Light

5. Behavior of Light - Two Light Bulbs Use rays to predict what one would observe if there were two light sources. Light Draw the “kissing” rays from bulb, B1. Partial Shadow Bulb1 Draw the “kissing” rays from bulb, B2. Full (Dark) Shadow Partial Shadow Bulb2 Shadow from bulb, B1 and light from Bulb, B2. So, what do we see on the screen? Light

6. Behavior of Light - Two Light Bulbs Use rays to predict what one would observe if there were two light sources of different colors. Light Red and Green Partial Shadow Green Full (Dark) Shadow Partial Shadow Red So, what do we see on the screen? Light Red and Green

7. Behavior of Light - Two Light Bulbs Use rays to predict what one would observe if there were two light sources of different colors. Light Red and Green Let’s review where the light shines. Partial Shadow Green Full (Dark) Shadow Partial Shadow Red Light Red and Green

8. Color By Addition. ~ Light!

9. Color by addition. Blue, red and green light from three different projectors. RED + GREEN = YELLOW RED + BLUE = MAGENTA BLUE + GREEN = CYAN RED + BLUE + GREEN = WHITE

10. RED GREEN Now you try this one and then I will show you the results.

11. RED SHADOW

12. Yellow Green RED

13. White Yellow Magenta Cyan RED + BLUE = MAGENTA RED + GREEN = YELLOW BLUE + GREEN = CYAN RED + BLUE + GREEN = WHITE

16. TheEND!