快来电｜玩电不玩火
余耳朵从小白到电力工程师，电力工作者的《葵花宝典》。
每周更新一集。
| Publishes | Weekly | Episodes | 3 | Founded | 4 years ago |
|---|---|---|---|---|---|
| Language |  ZH-CN | Categories | PhysicsTechnologyScience | ||
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你好，欢迎来到【余宙·快来电】，我讲出毕生所学，给小白长见识也给电力工人于现场指导。
第3回 电术语
今天我们来款几个电力工作中必须用到的专业术语：电压、电流、额定功率、补偿容量。
“电压”，才听见总会跟"水压"联系起来，总想象电压如同水压一样带有“压力”来驱动电流动，如同水压一样——电压越高电流越大。你有这样的感觉吗？
事实上，相同负载下，电压越高电流越小，电压越低电流却越高。这就是为什么发电厂发出来电后要升高电压才输送到终端，升高输电电压就是为了减少输电线路上电流，从而减少输电线路损耗。 more
你好，欢迎来到【余宙·快来电】，我讲出毕生所学，给小白长见识也给电力工人于现场指导。
第2回 电非电
上回提到，电可能是某种能量在特定物质里定向释放的过程；电蕴含着巨大的能量，接收自然界中75个超级雷电便可供我国用电一年。没错，平日里每天都用的、频繁到平凡的电，竟然这般不可思议。
然而，就是这个平日里每天都用着的电，却是人类迄今为止发明的唯一能达到光速还能控制的“东西”，也正因为电的速度为光速（即30万公里/秒），所以在地球上任何地方，只要一按开关就一定有电——这不难理解，因为4万公里的地球周长... more
如果你家停电了，那你现在心里一定一万个XXX在跑，目标就是“快来电”!欢迎来到余宙·快来电，我将毕生所学，给小白长见识也给电力工人于现场指导。
第1回 若即若离的电
最近，“拉闸限电”响彻大江南北，连“西电东输”南线的云南也不能幸免，真是“大跌眼镜”。在古代，我家云南自大元定“云南行省”后，每年要进“贡茶”，稍有闪失便有杀头的风险，故遇到像去年庚子这种灾年，得提前进京上表。即便当今，中缅天然气管道已成，安宁PX已运转多年，95#汽油价格依然稳坐全国三甲，紧跟海南和新疆。
言归正传。目前，全球的... more
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