Sound of Cocoa

What better way to wind down after a long hard winter’s day than by slumping into your favourite chair with your hands wrapped snugly around a nice warm mug of hot chocolate? Today we will be looking at something coined as the ‘hot chocolate effect’. And no, this is not the amazing effect it has on your taste buds and mood, although that can be considered equally as fascinating.
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Under-standing Waves

Do any of you play any stringed musical instruments? If so, then you’re probably familiar with the term ‘harmonic’, which is just a kind of special sound created by playing in a specific way. On the violin, you need to gently press the string with a finger whilst bowing, such that you are able to feel the vibrations of the string beneath your finger. The sound created is almost flute-like and has a silvery, hollow quality to it. However, this sound can only be created at certain intervals along the string, ½, ⅓, ¼, etc. Anywhere else on the string, it sort of sounds like metal wires being dragged down a blackboard. Yeah, don’t try it. So why is this weird sound only produced at ‘nice’ fractions of the string? And how does a stringed instrument work anyway?

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