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[quote=Anonymous][quote=Anonymous]my daughter did a project where she measured the sound insulation qualities of half a dozen different materials. where she kept the volume consistent, but varied pitch/frequency basically put a speaker in a box and measure the sound outside the speaker while it seems benign and simple, the project also involved building insulation box that the speaker went into. data acquisition was done in a day, but the build took time. nice thing was it did not require having to keep plants alive to get good data.[/quote] That's a cool idea! I'll have to pack that one away for the next time DS has a science fair project (I think next year).[/quote]
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