How to make a homemade lie detector?

Question

it shud be easy so that every1 cud make it

i think its related with pulse

Answer 1

Pepsi offered you a good trick that will probably work

quite well if you convince the subject that the water will

ripple.

A 'real' lie detector measures pulse, breathing, and

the electrical conductivity of the skin.

Probably beyond what you can make, and you have

to be trained to read one. Even then it's more judgement than science.

Answer 2

Put your hand in bowl of water just covering the top of your hand. I'm told the water will ripple when your lying. It's an old Indian trick. Good luck