Braun and Leaf electroscopes.
5A10.10 • D+10+8
Braun and Leaf electroscopes. There are two types of electroscopes to show. The Braun electroscope has a light-weight metal pointer on a needle-point suspension. Touching the top metal disk with a charged object causes the pointer to move to a position proportional to the amount of charge applied. The Leaf electroscope has a delicate metallic leaf on a hinge, enclosed in a glass-sided metal housing. Touching the ball of the electroscope with a charged object causes the leaf to rise. The Braun electroscope is adequate for most situations, but is somewhat less sensitive than the leaf electroscope. Charged rods or the electrophorus apparatus can be used to charge either electroscope. See D+10+4 for more information.
Related Demos
D+10+0 Electric fields: Lines of force shown on an OHP. D+10+2 Transparency: Mapping of an electric field. D+10+4 Pith balls on thread, with positive and negative charged rods. D+10+5 Vector arrows to show electric field and particle motion D+10+6 Attraction and repulsion of charged styrofoam balls. D+10+9 Discharging an electroscope through ionization D+10+10 Faraday's ice pail: Charge induced on the outside of a pail. D+10+11 Alternate charge resides on outside of conductor D+10+12 Charge resides on the outside of a conductor. D+10+13 Faraday cage: blocks signal from portable radio D+10+14 Charging an electroscope by induction. D+10+16 Separation of charge using electrical tape and an electroscope. D+10+18 Electrophorous: Cat fur on teflon, acetate on lucite. D+10+20 Van de Graaff generator. D+10+22 Wimshurst machine, large or small. D+10+24 Electrostatic pinwheel:Van de Graaff makes pinwheel spin. D+10+25 Like Charges Attract D+10+26 Various Leyden jars to show. D+10+28 Electrostatic doorbell: Ball bangs between charged plates. D+10+30 Kelvin water drop electrostatic charge generator. D+10+35 Electric field created by Van de Graff splits ions in flame D+10+40 Applet: Charges and Fields D+10+45 Polarization of can causes rolling D+10+45 Applet: Electric Field Hockey D+10+50 Applet: Electric Field of Dreams D+10+55 Applet: John Travoltage D+10+60 Applet: Balloons and Static Electricity D+10+65 Applet: 3D Electrostatic Field Simulation D+10+75 Applet: Field and potential produced by point charges D+10+80 Applet: Electrostatics Visualizations - The Charged Metal Slab D+10+85 Applet: Electric Field D+10+90 Electrostatics Index D+10+95 Applet: Electrostatics Simulation D+10+100 Applet: 2-D Electrostatic Field Simulation