Suggested by - Mark via Twitter
How to photograph sound.
1. Take a cardboard tube.
2. Fasten a balloon tightly over the end.
3. Stand tube onto speakers of a radio or similar.
4. Place camera on a tripod and set for a long shutter speed.
5. Place a few grains of sugar onto the balloon.6. Turn on the sound - the more base the better.
7. Fire camera shutter.
The grains of sugar appeared to dance due to the vibrations. The long exposure allowed the moving grains to be recorded, whilst other grains remained still. (Don't ask me to enlarge on the technical bits - I failed Physics!)
Further experiments may be carried out to see if there is any correlation with volume v height jumped. (But it would be courteous to inform neighbours first about possible noise disturbance) Too much sugar on the balloon prevented the grains from jumping as the vibrations were muffled.
(I know - it should have been the Beach Boys "Good Vibrations" but the sugar seemed to like it!)
The grab shot
My thanks to:
Mark for the suggestion
Tomorrow, Day 27