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Seeing Sound travel

…to a large class is that you can make a really long medium. Here we had 70 students in a line indicating with their arms when a sound wave came by them. We measured the speed of sound to be 47 m/s. [speed of sound in air is around 340m/s].  : ( Well that’s science. The still short period of time measured was inflicted with a really big reaction time error.  Tomorrow we will improve on our procedure and hope for better results.

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