Discovery of charge

Historically, discover of change should be attributed to ancient Greek philosopher who noted when certain material is rubbed with fur,it acquires property of attracting light objects such as, dust particles,cork bits etc. Thales of milteus,around 600BC wrote in his writing that his property in much more seen in amber when rubbed with wool.
Gilbert(1540-1603), physicists to queen Elizabeth,showed that many other substance are similarly affected by friction, say glass rod rubbed with silk,sealing wax with flannel, vulcanise with fur do do in marked degree.
It should be noted that in ab ore process, there are two suitable materials, which are brought in close contact by rubbing and on separating they acquire the property of attracting light objects.In order to describe this effect we say that the material is electrified or charged.It means, the bodies have acquired a quantity called charge or electricity. The process of charging bodies by rubbing is called electrification. The electrification is from Greek world which means other.
It is clear that during electrification two suitable materials are required and both of them are charged,As charges are produced in the bodies by rubbing,it is also called frictional electricity.