Science Olympiad Optics Color and Shadows The Electromagnetic

Science Olympiad Optics Color and Shadows

The Electromagnetic Spectrum.

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

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

Draw the “kissing” rays from bulb, B 2. Shadow from bulb, B 1 and light from Bulb, B 2. So, what do we see on the screen? Light Partial Full (Dark) Shadow Bulb 2 Draw the “kissing” rays from bulb, B 1. Partial Light Shadow Bulb 1 Behavior of Light - Two Light Bulbs Use rays to predict what one would observe if there were two light sources.

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

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

Color By Addition. ~ Light!

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

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

RED SHADOW

Yellow RED Green

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

The END!