Nangangahulugang "Muling Pagsilang" ng kulturang Griyego at Romano at pagla
Humanismo mula Italya patungong Europa?
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Static Electricity - Lesson 2 - Methods of Charging
Charging by Induction
Triboelectric Charging
Charging by Induction
Charging by Conduction
Grounding - the Removal of a Charge
The previous section of Lesson 2 discussed the process of charging an object by friction or rubbing. Friction charging is a very common method of charging an object. However, it is not the only process by which objects become charged. In this section of Lesson 2, the charging by induction method will be discussed. Induction charging is a method used to charge an object without actually touching the object to any other charged object. An understanding of charging by induction requires an understanding of the nature of a conductor and an understanding of the polarization process. If you are not already comfortable with these topics, you might want to familiarize yourself them prior to reading further.
Quick Links to Prerequisite Reading
Conductors and Insulators
Polarization
Charging a Two-Sphere System Using a Negatively Charged Object
One common demonstration performed in a physics classroom involves the induction charging of two metal spheres. The metal spheres are supported by insulating stands so that any charge acquired by the spheres cannot travel to the ground. The spheres are placed side by side (see diagram i. below) so as to form a two-sphere system. Being made of metal (a conductor), electrons are free to move between the spheres - from sphere A to sphere B and vice versa. If a rubber balloon is charged negatively (perhaps by rubbing it with animal fur) and brought near the spheres, electrons within the two-sphere system will be induced to move away from the balloon. This is simply the principle that like charges repel. Being charged negatively, the electrons are repelled by the negatively charged balloon
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Renaissance
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