Home Mech Fluid Waves Thermo E&M Optics Modern Astro
Title: Point and Diffused Light Sources
PIRA: 6B 10.30

Demonstrates: Umbra and Penumbra shadows.
Description: Use 100 W frosted bulb for diffuse source and a point source. Use 6" diameter aluminum grounding ball from Van de Graaff for object. Project shadows on wall or screen.
Instructions:
Items Used:

Notes: Best when projected onto a screen. Math Description: None.

Size: 16" h x 40" w. Condition: Good. Hazard: None.

Schematic: 6B 10.30 Tech Specs: None. Web Links:
History:

Click for Larger Image

Back to Demo Site.
Report inaccuracies with the demo.