Wednesday, February 3, 2010

How to do invisible ink?

Experiment from Grzegorz&Justyna


video

It happens because hydrogen contained in the lemon juice, affixed to a piece of paper under the influence of fire reacts and stained with brown.

3 comments:

  1. Very well explained.

    A greeting from Spain

    ReplyDelete
  2. Andrea (Spanish team)February 4, 2010 at 8:50 AM

    I really like it ! Good job and very well explained.

    ReplyDelete
  3. Nice! Very good experiment!

    huges from Spain

    ReplyDelete