Forgery
Forgery is the copying of another persons writing or signature.
Criminals use it to sign cheques falsely.
Aim: To figure out which pen is used to write a forgery letter.
Hypothesis: We will know which pen was used to write the Forgery letter.
Equipment:
- Beaker
- Filter Paper
- Pen
- Sellotape
- Water
Method:
- Measure paper
- Draw Horizontal Line at 2cm mark.
- Put water into Beaker.
- Make sure water is below 2cm mark.
- Leave for ~5 mins.
- Water needs to go up tissue, do not let paper fall into water.
- Attach a cut piece of the letter onto another piece of filter paper.
- Leave second filter paper in 50 ml water
- Compare ink marks.
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