Electrostatics experiments

Light objets attraction Hanging balloon Trickle of water Electroscope and versorium Charging and discharging by contact Charging by induction Points power Two sorts of electric charges (a) Two sorts of electric charges (b) Conduction Sign of Charges Electrostatic chime Electrophorus Faraday  Cage
French page

by Michel Maussion - University of Nantes - France

Back to summary

Two sorts of electric charges (a)

Electroscope charged positively




Rub a straw and then load the electroscope by induction.
Next, when you draw near the same straw, the leaves begin by falling down.

 Bring the straw nearer to the plate. 

The leaves then diverge.



See video (DivX Codec) 410 ko or 55 ko .


Electroscope charged negatively




Load the electroscope by points.
Bring the charged straw near : the leaves diverge still more.

See video (DivX Codec) 596 ko or 98 ko .


W3C Validation    WDG Validation