101 Science Experiments

101 Science Experiments

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During night, while ascending the stairs you press the switch and the bulb lights up. ... In addition to 1.5 volt cells, one 3 volt bulb and a few copper wires or fuse wires, you mould need 2 two-way switches. ... Connect the switch and the bulb with wires as shown in the diagram and fix them on a plywood or wooden plank.

Title:101 Science Experiments
Author:Ivar Utial
Publisher:Pustak Mahal - 2004-12-01


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