
元来如此—好玩的冷知识
好玩的生活冷知识,能想到的,想不到的,这里都有~~你茶余饭后最好的谈资
128
355期
Pencil lead, primarily composed of graphite and clay, is a conductive material due to its inherent electrical conductivity. Graphite content affects the conductivity: higher in darker leads, making thicker and shorter ones more likely to conduct electricity. Hardness and color also play a role, with less graphite content in lighter colors resulting in lower conductivity.


143期

沪ICP备06026464号-4 网络文化经营许可证
沪网文[2014]0587-137号
信息网络传播视听许可证:0911603
©2011-2019 qingting.fm ALL Rights Reserved.
应用名称:蜻蜓FM | 开发者:上海麦克风文化传媒有限公司