Foil Electroscope Set (1 pair) What it is A pair of foil electroscopes for detecting and demonstrating static electric charge and related phenomena. Compact, enclosed design made of plastic and metal for classroom and laboratory use. Key benefits Quick identification of charge sign: visually shows whether an object is positively or negatively charged by measuring changes in the foil opening angle. Clear demonstration of conductors and insulators: used to show charge transfer through metal and the lack of transfer through glass or hard rubber. Reliable classroom tool: enclosed plastic construction provides good insulation and sensitivity, reducing interference from humidity and typical classroom conditions. Portable and easy to use: simple setup and visible responses make it ideal for teaching and small lab experiments. Specifications Contents: 1 pair of foil electroscopes Size: base length 115 mm, base width 73 mm, total height 148 mm Material: plastic housing with metal rod and metal foil elements Weight: approximately 295 g per set Main functions Determine whether an object is charged positive or negative by bringing the object near the of the electroscope without touching; an increasing foil opening angle indicates the same sign as the electroscope, a decreasing angle indicates the opposite sign. Test conductors and insulators by transferring charge between two electroscopes using a metal connection or by using glass or hard rubber to show lack of transfer. Demonstrate induction charging and basic electrostatic principles through visible foil movement. Simulate magnetic molecular structure and illustrate magnetization and demagnetization phenomena for related demonstrations. How to use (concise) To check charge sign: charge the electroscope known positive or negative so the foil opens. Move the test object near the without touching. Observe whether foil opening increases or decreases to determine same or opposite charge. To test conductivity: charge one electroscope and connect its to the second electroscope with a metal rod; both will show similar foil opening if charge transfers. Repeat with glass or hard rubber; foil openings will remain unchanged, showing insulating behavior. To test if an object is charged: touch the object to the of the electroscope briefly. If the foil opens, the object carried charge; if not, it did not. Practical applications and use scenarios Physics classroom demonstrations: show static electricity principles, charge conservation, induction, and conductor versus insulator behavior to students. Laboratory exercises: use in practical lab sessions for measuring relative charge effects and practicing safe electrostatic experiments. Science fairs and museum exhibits: provide interactive, visible experiments to engage audiences in electrostatic concepts. Performance notes Enclosed plastic design enhances insulation and sensitivity. Simple mechanical response of metal foil gives immediate, visible results without electronic equipment. Compact dimensions suit desktop demonstrations and portable use. Package includes One pair of foil electroscopes, assembled and ready for demonstration use.