PINHOLE INVESTIGATIONS

Sources of Materials in Pinhole Kit

Cardboard boxes: Square boxes of graduated sizes: 8-1/2, 9, 10, 10-1/2, 11 and 12 inches square, available at packaging stores or moving companies.

Clamp Light Cords: We used Eagle brand #484, but any hardware store clamp light will work. Just remove the clamp and reflector. A hardware store can order these in bulk from Eagle if they are not in stock.

Light bulbs: We chose these bulbs because they have different filaments and are fairly bright (60 watts or more). We have included catalog numbers for these bulbs so a hardware store can get replacements for you. You could also buy bulbs yourself off the shelf --- just look for filaments of interesting shapes.

Name	Watts	Catalog No.	Filament Shape
G.E. Crystal Clear	150	150A/CL	vertical
G.E Ceiling Fan Light	60	60A15/CF CDC 2	C-shaped
ABCO Chandelier Bulb	60	60Bll/CD	V-shaped
Ace Tubular Bulb	60	60T10	pentagonal
Abco Clear	75	75A19 Clear	horizontal
Ace Decorator Clr. Globe	60	60G25 Clear	C-shaped

Pegboard: from a hardware store, or a lumber store. Ask them to cut it for you if you don't have a table saw.

Filament Tape: 3M Tartan #8934 (2") is recommended for protecting the windows.

Die-Cut Cards: These are cards for doing the Array of Holes and the Spots and Streaks activities listed in the ImageWalk magazine. They are not available, but you can make your own (see ImageWalk magazine, pp. 2-11).

Bob Miller's Image Walk (Exploratorium Quarterly Magazine): Reprints of the ImageWalk magazine are not available. However, the ImageWalk magazine can be reproduced for educational purposes.