A Brighter Tomorrow: The Power of Solar Energy — Electricity Problems, 2페이지
작가: darren_bacorro · 발행
대본
Outside the community center, Kyanite, Lucky, and Darzk examine two calculators on a table as Hawk watches. Kyanite: “Look! The moment sunlight touches this dark strip, the display turns on!” Lucky: “Uncover it!” Darzk: “Coincidence. Let me cover it... It went blank.” Darzk: “It is back. So the light is doing something.” Hawk: “The light itself must be supplying the energy!” Kyanite: “Then sunlight can become electricity!” Caption: “Sunlight transfers energy to charge carriers in photovoltaic cells, allowing electrical current to flow through an external circuit.” Diagram labels: “Sunlight”; “Photovoltaic cells”; “Electrical current”; “DC electricity.” Darzk: “That dark strip is a photovoltaic cell. When sunlight reaches it, it can free charge carriers and create an electric current.” Kyanite: “And the electricity it produces is direct current, or DC!” Kyanite: “Right. We need additional equipment to make it suitable for most household and building appliances.” Darzk: “Now that is the kind of explanation I wanted.” Kyanite: “More cells, more power. A solar panel is many cells working together!” Hawk: “The inverter converts DC into AC electricity.” Diagram labels: “Sunlight”; “Solar panels”; “DC electricity”; “Inverter”; “AC electricity”; “Building”; “(optional).” Hawk: “And if we include a properly designed battery system, we may also store energy for later.” Darzk: “That sounds more useful. But what happens when the sun goes down?” Hawk: “We need to design the system around the building’s actual energy needs.”
이미지 설명
Kyanite, Lucky, Darzk, and Hawk test a solar-powered calculator outside a community center, then discuss how solar cells, inverters, and batteries can supply electricity.
이 챕터에 대해
On another evening of power outages, Kyanite, Hawk, Lucky and Darzk see their small town struggle with unreliable electricity and expensive bills, and agree to look for a better way. Late that night in Kyanite's workshop, Lucky's box of old gadgets reveals a mystery: a calculator that never needed batteries.