天气预报 > 其他 > 灯泡为什么会发光
灯泡为什么会发光
更新时间: 2020-07-13 00:00:00  

白炽灯里面的灯丝是钨丝 ,其主要成分是钨,当钨丝通电时,由于钨丝的电阻式电能转化成内能 将钨丝加热,温度升高,一般金属加热到一定程度后就会发光。

关键词: 灯泡 为什么 发光

灯泡为什么会发光相关经验

天气预报

最新推荐

页面:/news/view-3466119/ | 耗时:0.6060 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=3466119 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3466119 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3466119 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1085947,1097415,951607,445580,1100931,945784,219927,445858,327930,268906,322323,1304908,1463957,714839,620288,1064527,1072435,261407,124476,1099861,131498,868656,482175,268620,650504,1130118,1089446,208090,233629,425991) ORDER BY field (ArticleID,1085947,1097415,951607,445580,1100931,945784,219927,445858,327930,268906,322323,1304908,1463957,714839,620288,1064527,1072435,261407,124476,1099861,131498,868656,482175,268620,650504,1130118,1089446,208090,233629,425991)