School Science/Demo periscope

A cost-effective way of making a sturdy demonstration periscope Image:periscopecx.pngFig. 1Periscope Demo DiagramImage:periscopedphoto.jpgFig. 2Periscope Demo Photo Equipment Required (to Make Demo Periscope) 2 pieces of plywood 45 cm × 10 cm and 0.9 cm thick 2 pieces of plywood at least 37 cm × 10 cm and 0.9 cm thick 2 pieces of plywood at least 11.6 cm × 10 cm and 0.9 cm thick 2 pieces of wood which are prism shaped at least 10 cm × 8.5 cm × 8.5 cm the internal angles should be 90° and 45° 2 plastic or glass mirrors 10 cm × 10 cm small screws to fit. Screwdriver Drill with suitable drill bits for the screws PVA Glue Method for making the demonstration periscope Cut the wood to the correct size and sand if need be. Screw the 4 long pieces together as in fig 1. Screw the prism shaped pieces of wood on either end as in fig 1. and attach mirrors with glue. Attach ends as in fig 1. It should look something like fig 2.