Previous Next

Inverted Light Bulb
# 6A20.30

Description: With proper alignment, the bulb will appear in the empty sockot on top of the box.Turn the demo cart from side to side so all can see the light bulb.

Instructions: Place the light box's front edge 31.5cm(12 3/8in.) from the front edge of the concave mirror. Make sure the edges of the box and mirror mount are parallel for best results.

Parts: 1) The inverted light box 2) The concave mirror mounted in the wooden structure 3) A cart* 4) A piece of plywood (2'x4' works well)* * for portability/turnability

Purchased/Built: built

Setup Time: 20 min

Quant. in Demo Room: 1

Demo References
Sutton L-24 A 40 W lamp is projected onto an empty socket.
Sutton L-23 Hints for projecting a real image (rose) on an object (vase).
Freier and Anderson Oc-10 A hidden flower at the center of curvature of a parabolic mirror appears in an empty vase.

Keyword Search:
complete words only, or parts of other words?

Home Manual Demo Suggestions

NCSU Physics Demonstrations
© 2010, North Carolina State University Department of Physics. The design of this site nor the
contents may be copied without the express written permission of the NC State University Department of Physics.

North Carolina State University
All Rights Reserved, 2011