Introduction to TechnologyChapter 8:
Electricity to ElectronicsChapter SummariesSection 8.1
Electricity is the movement of electrons from atom to atom. Electricity is forced through wires by its voltage. A wire’s resistance is determined by its thickness, length, and its ability to conduct electricity. Section 8.2
Insulators cover conductors because they resist the flow of electricity. Superconductors have no electrical resistance. In a series circuit, electricity must pass through each device. If one device burns out, the electricity stops flowing. Parallel circuits have separate pathways. Section 8.3
We use electromagnetic waves and fiber optic cables to carry messages. By transmitting signal beams on different wavelengths, we can send many messages on the same fiber optic strand at the same time.
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