A Brighter Tomorrow: The Power of Solar Energy — Electricity Problems、2ページ
作: darren_bacorro · 公開
書き起こし
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.”
画像の説明
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.
この話について
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.