Wu Jing is Grade three this year, self-study to go home late, dark corridor so that she was particularly afraid of. High school physics introduce a “magnetic-generated” The classic principles of generation of electricity: magnetic coil cutting line will produce electrical energy; capacitor can store electrical energy generated, and the use of open switch can be generated when the current so that Light-emitting diodes. Wu Jing in accordance with these principles, the invention of the flashlight without batteries: Put the torch a small magnet onto a coil, carrying a flashlight to become a “generator”, shaking flashlight, beating a small magnet and coil sensors will be able to produce electricity a. Now, Wu Jing day with such a flashlight to school after school, she said less than 50 as long as Akira, the torch will be able to light for five minutes.
This invention won the seventeenth session of young people in Zhejiang Province elite first Invention Award, also received a national patent, “I think it particularly suitable for camping in the wild friends, at any time can be leisurely to use a flashlight, Do not worry there is no battery inspiron e1505 or other power. “Wu Jing said,” Although it is very simple principle, but the invention is a moment of inspiration coupled with careful observation of life. “she said of the creative life can also be used in more small household electrical appliances on, creating more energy-efficient appliances.
