Tuesday 7th march 2017 Forgery is the copying of another persons writing or signature. criminals use it for signing cheques falsely
Aim
to figure out which pen is used to write a forgery letter
Hypothesis
we will know which pen was used
Equipment
Beaker,Filter paper,pen,sellotape and water
Method
1.put a dot on the filter paper 2 cm up
2.put 50 ml of water in the beaker
3.put the paper in the water and leave it their for 5 minutes
4.attach a piece of the letter to the paper with sellotape
5.place the paper in 50 ml of water
6.compare the two ink marks
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