C4 practical: Speed of sound (drinking straw) support
Apart from the need for a computer with microphone the apparatus is very simple requiring only a drinking straw and a pair of scissors. Drinking straws with out those bendy bits are best but I couldn't find any in my local shop so had to do with a slightly bent variety. You can also use a sound sensor plus interface instead of the computer microphone plus Audacity, but it seems a bit pointless especially since the...