Can you make a rainbow disappear?

Can you make a rainbow disappear?

You can now...with a Newton colour wheel.

What you need:

  • A colour print out of the colour wheel above
  • Glue
  • Cardboard
  • Scissors
  • Pencil

How you do it:

Print out the colour wheel above.

Glue the colour wheel to a sheet of cardboard. Wait for the glue to dry.

Once the glue is dry, pierce the the middle of the colour wheel with scissors (ask a parent or guardian for help here).

Insert a pencil through the hole until the colour wheel is about a third of the way along the pencil.

Spin the disc and watch what happens...

Did you see the colours merge into white? Find out why this happens HERE.

Watch this video to see a different Newton's disc being made:

Or go to YouTube.

Thanks to Planet Scicast for pointing us in the direction of the brilliant Arvind Gupta. See more of his science toys HERE.