On Friday we had a former V-O Parent visit to give a presentation on sound. He talked all about sound waves and we even dissected a speaker to see how it works!
We also talked about electromagnets and how the strength of electricity through the electromagnet's wire forces two magnets to repel, and when doing so push air with a paper disk to create sound waves fast enough for our ears to hear.
So you can imagine how excited I was to come home and discover this video that shows sound waves from FIRE using something called a Rubens' Tube.
Check it out!
Another fun video by the Slow Mo Guys slows down a video to show a speaker jiggling the air. They poor a bunch of paint on a speaker, then turn on some sound. The paint begins to bounce as the speaker begins to jiggle and spread the sound waves!
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