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What is a lie detector it is a lying machine to see if a person is lying or not.?
A lie detector is a machine that monitors brain waves and heart rate to be able to tell if a person is telling the truth.
How heavy is a lie detector machine?
very
What are the parts of a polygraph machine?
A lie detector picks up changes in your pulse and heart rate. Generally when you tell a lie, your pulse will increase because you don't want to tell the person what you are hiding and consequently become nervous. It has been confirmed that a lie detector can not be trusted fully to determine whether you are lying or not.
What machine measures pulse respiration and galvanic skin response?
lie detector
Can you have lie detector test done whilst pregnant?
There is no reason a pregnant woman cannot have a lie detector test done because it goes by blood pressure. When a person is trying to cover a lie their blood pressure rises.
Where can you get a lie detector?
California
Can Someone can get around lie detector?
yes people can it actually detects how nervous u are not really a lie detector
What does polygraph mean?
An instrument for multiplying copies of a writing; a manifold writer; a copying machine., In bibliography, a collection of different works, either by one or several authors., An instrument for detecting deceptive statements by a subject, by measuring several physiological states of the subject, such as pulse, heartbeat, and sweating. The instrument records these parameters on a strip of paper while the subject is asked questions designed to elicit emotional responses when the subject tries to deceive the interrogator. Also called lie detector
What are the principle of operation of lie detector?
Lie detectors, or polygraph machines as they're more officially known, are large contraptions that are filled with buttons, levers, paper, and measuring devices. They have been used for years in law enforcement to detect whether or not someone is actually lying to officials. The reason why people would lie to law enforcement officials is obvious - they committed a crime that they don't want to get caught for. Lie detectors can help solve this problem by asking a person who's strapped to a lie detector several questions and then analyzing the results. However, lie detectors still aren't permissible in court. This means that should a person fail a lie detector, they will not be able to be proven as lying in a court of law. And likewise, a person will not be able to use the results of a lie detector test to prove that they are telling the truth. This is because lie detectors can't actually detect if a person is lying. They can only tell if the person is displaying deceptive behaviour.
How can a lie be detected?
A lie detector test follows you pulse, if you are asked a question and your heart rate rises or falls then it will be a lie. If you can regulate your pulse you cannot be detected on a lie detector
What are the advantage and disadvantages of polygraph machine?
advantage: you come to know who is lying disadvantage: the principle is based on the human skin resistance, is the person who is subjected to the test is lying confidently then it will be difficult for the lie detector circuit to catch a lie because in this case you wont be sweating or feeling nervous
What is the use of lie-detector?
It is a machine that detects changing in blood pressure, heart rate and other body rhythems to detect false statements.
