PINHOLE INVESTIGATIONS

Sources of Materials in Pinhole Kit

©1998 Exploratorium

 These are the materials that are included in the pinhole kit. They are listed below along with places where you can get replacements.

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.