Polygraph (duplicating device) lift of the principal pen grasped by the user from the paper to be transferred to the copying pen. Original polygraphs may be viewed at a number of locations around the world. Some United States locations: The original American patent document for the polygraph, issued to John J. Hawkins on May 17, 1803, was lost in a Patent Office fire in 1836. The "Griffin Discovery Room" at Monticello contains a simplified and durable version, intended for use by children. An image of this version in use may be seen here. Polygraph (duplicating device) A Polygraph is a device that produces
Heather (given name) Heather (given name) Heather is a common English speaking nation given name, for girls. The name Heather actually refers to a variety of small shrubs with pink or white flowers which commonly grow in rocky areas that is literally referred to as Heather, in English. The brush is native to Scotland and England, but it is more commonly found in Scotland due to its rocky territories. The name is derived from Middle English "hather". Heather has several other definitions. The most commonly known is as a reference to a color mixture, it is most often a pale shade of blue