How to make a DIY Harmonica I Science of Pitch Summary In this video Thanuri will show you how to create a DIY Harmonica and talks about the science of pitch or frequency. How to make a DIY Harmonica I Science of Pitch Asset type Science at home Related content How to test soil Dr Nici Sweaney show you how to test soil health. Discover how to measure pH, phosphorus, potassium, and nitrogen to boost plant growth in this fun experiment. Read more Coin Illusion | The Science of Magic A deceptive illusion using just a coin, a glass and some water. Try this simple experiment to learn about the science of magic! Read more Surface tension, cohesion and adhesion Join Dr Julie and try at home two experiments about different types of surface tension in water. Read more Subscribe to receive new experiments as they become available Email Address * Subscribe