parts of a polygraph machine
Bam Bam and Justice Story
has a washing machine changed of affected society?
Polygraph examiner
The polygraph test is not "proof-positive". The polygraph test is not completely unreliable.
The machine itself has done little -how it has been used is to cause self-doubt in those who would deceive.
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.
Not if it's genuine. The polygraph is based on physiological reactions in the subjects body. If you genuinely have no recollection of events surrounding a particular incident, the polygraph wouldn't detect any changes - However, if you try to fake memory loss in order to avoid answering a question, the machine will detect minor changes and flag the answer as false.
Thomas Edison found his polygraph machine handy because it allowed him to make simultaneous recordings of multiple variables, such as mechanical and electrical phenomena, which helped him in his experiments and inventions. This device helped him gather precise data, analyze results, and improve his understanding of various scientific principles.
The Machine That Changed the World - TV miniseries - was created in 1992.
First, Thomas Jefferson's polygraph was an item he got from the maker -- he didn't invent it. And, it was not a lie detector. It was a sort of copy machine. It made a duplicate of a hand written letter as the letter was being written. It was useful because it allowed him to keep a copy of letters he sent without having to make a second copy by hand.
AHH a lie detector ANSWER by Engl1sh: A perfessional typically uses the term 'polygraph' test.