MODERN OPTICS

6Q10.10 Hologram

1.View "white light" hologram of row of dominoes that seem to be floating in the air. Actual light has a yellow tint. Students will need to come up to table to see. View off to the side rather than looking directly at light source.

2. Reverse Magic Instead of making something dissappear you make something appear. Show audience cylinder is empty. Show illuminated platform is empty. Put cylinder on platform. A small car appears inside. The holographic image appears if the cylinder is illuminated with sodium lamp. Determine which end of cylinder is which before trying. No image if cylinder upside down. Could do this deliberately as comical touch.

Setup Requirements: Assembled as needed. Dark room needed. Sodium lamp needed for #2.

Equations: None

Safety Issues: View so you are not looking straight at the light source.