Editing 711: Seismograph
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==Explanation== | ==Explanation== | ||
β | A {{w|polygraph}} (popularly referred to as a lie detector) measures and records several physiological indices such as blood pressure, pulse, respiration, and skin conductivity while the subject is asked and answers a series of questions. The belief underpinning the use of the polygraph is that deceptive answers will produce physiological responses that can be differentiated from those associated with non-deceptive answers. Polygraphs are generally considered to be pseudoscientific and are not admissible as evidence. (They've been described as worse than coin toss to determine whether | + | A {{w|polygraph}} (popularly referred to as a lie detector) measures and records several physiological indices such as blood pressure, pulse, respiration, and skin conductivity while the subject is asked and answers a series of questions. The belief underpinning the use of the polygraph is that deceptive answers will produce physiological responses that can be differentiated from those associated with non-deceptive answers. Polygraphs are generally considered to be pseudoscientific and are not admissible as evidence. (They've been described as worse than coin toss to determine whether as individual is a trained double agent, for instance. The reasoning is that while the coin toss is [also] randomly incorrect about half the time, at least you can't train to beat the coin toss every time). However, they can be an effective prop to convince suspects that interrogators will know if they lie. |
A {{w|seismograph}} is a machine which measures and records the ground's motion during e.g. an earthquake. Older seismographs held a pen against a slowly turning roll of paper, and ground motions were amplified and recorded as spikes in the pen line. | A {{w|seismograph}} is a machine which measures and records the ground's motion during e.g. an earthquake. Older seismographs held a pen against a slowly turning roll of paper, and ground motions were amplified and recorded as spikes in the pen line. |