A bell that rings two notes at once
Explaining how a bell goes ring-gin-gin-gin (with the sound going up and down as the bell rings out). The key is multiple modes of vibration.
Expanding on this, I experimented with making a bell that sounds two distinct notes, forming roughly a major third.
http://woodgears.ca/physics/bell.html
It turns out numberphile did a video on this topic last year, but relating to coffee cups: https://youtu.be/MfzNJE4CK_s
Видео A bell that rings two notes at once канала MatthiasWandel
Expanding on this, I experimented with making a bell that sounds two distinct notes, forming roughly a major third.
http://woodgears.ca/physics/bell.html
It turns out numberphile did a video on this topic last year, but relating to coffee cups: https://youtu.be/MfzNJE4CK_s
Видео A bell that rings two notes at once канала MatthiasWandel
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