资源简介 1.5认识棱镜(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"\l"wechat_redirect"\t"https:?/??/?mp.weixin.?/?_blank?)1.光由空气斜射入水中时,光的路线会发生变化,这种现象就是光的折射现象。(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"\l"wechat_redirect"\t"https:?/??/?mp.weixin.?/?_blank?)2.光由空气斜射入玻璃等其他透明物体时,也能发生折射现象。(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"\l"wechat_redirect"\t"https:?/??/?mp.weixin.?/?_blank?)3.让一束白光通过三棱镜,会发现白光被分解成了红橙黄绿蓝靛紫7种颜色的光。(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"\l"wechat_redirect"\t"https:?/??/?mp.weixin.?/?_blank?)4.白光是由红橙黄绿蓝靛紫7种颜色的光组成的。(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"\l"wechat_redirect"\t"https:?/??/?mp.weixin.?/?_blank?)5.通过制作彩色轮活动,懂得色光可以在一定条件下混合成白(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"\l"wechat_redirect"\t"https:?/??/?mp.weixin.?/?_blank?)光。6.三棱镜的特点:三棱镜是透明的玻璃体,具有三条棱,横截面是三角形。7.彩虹的颜色是红、橙、黄、绿、蓝、靛、紫七种颜色。8.彩虹形成的原理:彩虹,是气象中的一种光学现象,当太阳光照射到半空中的水滴,光线被折射及反射,在天空上形成拱形的七彩光谱,由外圈至内圈呈红、橙、黄、绿、蓝、靛、紫7种颜色。(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"\l"wechat_redirect"\t"https:?/??/?mp.weixin.?/?_blank?)9.彩虹的形成就是光的折射现象的一种表现。(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"\l"wechat_redirect"\t"https:?/??/?mp.weixin.?/?_blank?)10.尽管太阳光用肉眼看上去几乎是白色的,但它是由许多不同颜色的光组成的。当白光进入棱镜时,由于不同颜色的光发生折射的程度不一样,就出现了红、橙、黄、绿、蓝、靛、紫等各种颜色的光。其他物体发出的光也具有不同的混合颜色。(?https:?/??/?mp.weixin.?/?s?__biz=MzI4NjA0NDk1Nw==&mid=2247491002&idx=8&sn=4490b7dd49766055100c4e338ba19161&chksm=ebe3bbc8dc9432de620f3b4604946db4dad1a90e9db58dcc30dfa779cbd4913fcfec69fc47bc&token=1332842534&lang=zh_CN&scene=21"\l"wechat_redirect"\t"https:?/??/?mp.weixin.?/?_blank?) 展开更多...... 收起↑ 资源预览 当前文档不提供在线查看服务,请下载使用!