practically unheard of. If their function is to divert the lightning to the rod and into the ground..thereby saving the house from being struck.and if they workwhy wouldn't everyone want one for their house?
This Site Might Help You. RE: How can lie detectors tell that you're lying? Is it by your body heat? how do they tell? does it have anything to do with body heat?
A rather simple and basic tool called tell a lie for comparison. Before you undergo a test as such, you will be asked to tell a straight forward lie. And the person in charge will use this as a format besides other things like blood pressure, and pulse.
make /watch?v8zEH5GxPNO8 or make your ears more open, or sleep earlier
Lie detectors or polygraph tests use electrical skin conductivity and heat rate to measure your bodies responses to certain questions. At first, certain known facts are asked, as Is your name. or Are you . years old? .This information is already known and acts as a control for the researches to use. This way, he knows how the body is reacting towards truthful information and can later on compare this to any other information regarding unknown situations. Sometimes brain waves are used and also Blood Pressure Monitoring can be utilized. As far as i know, body heat has nothing to do with lying, since the body maintains an average temperature of around 98.6, but increase sweating (skin conductivity) might be a sign of lying. All these measurements are used to come to a conclusion, although two or three of the measurements taken in 1 test can be contradicting, so some tests come out as Unconclusive. In all, these tests are not really reliable since fooling one is just a matter of either luck, different body reactions to certain stressful situations and even adapting yourself to change the meaning of the question in your head before even answering it.
A polygraph (lie detector) is a lot of medical devices combined into one. It measures heart rate, blood pressure, respiratory rate and electro-dermal activity and looks for change in the normal levels. So no, nothing to do with body heat.
