HOW TO…
Practical projects to try at home
MAKE A RAINBOW WATER COLUMN
By stacking different water densities, you can capture a rainbow in a glass
1 GATHER YOUR EQUIPMENT
For this experiment you will need one more glass than the number of layers you wish to create in the column. The extra glass should be tall and thin.
2 POUR IN THE WATER
Fill all but the tall glass with warm water. Make sure you keep the volume of water relatively equal for each glass.
3 DROP IN SOME COLOUR
Add a few drops of a different coloured food colouring to each of the glasses of water. Keep the number of drops consistent.