Ha, nang, don’t ask me for the physics ka equation — I learnt it from trying to carve a bamboo flute for my little one! The textbook says ka pipe closed at one end, the sound wave must have a node there, so only odd harmonics fit, like 1, 3, 5. Even ones get stuck.
But I swear, when I was sanding that bamboo in the quiet morning, with only the generator’s hum gone, my ears caught something sweet and even in the sound. Maybe my pipe wasn’t perfectly closed, or the hills listen differently.
It’s like our power cuts — theory says ‘no light,’ but my wife’s orchids always find a little glow from somewhere.
#exams#study
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