Prism – light spectrum refraction – rainbow

Light dispersion using a prism shows a rainbow spectrum.
I used the sunlight with the window shutters almost closed to have a beam of light through. Then I put a prism on a sheet of paper and I rotate the sheet of paper to turn the prism until to find the good angle to see the light dispersion.
Look at the top corner of the sheet ! (you will see I turn slowly the sheet of paper)

#coolobjects