51
防晒究竟在防什么？阴天要不要防晒？
source link: https://tech.sina.com.cn/d/v/2019-06-14/doc-ihvhiqay5567585.shtml
Go to the source link to view the article. You can view the picture content, updated content and better typesetting reading experience. If the link is broken, please click the button below to view the snapshot at that time.
来源：中国科普博览防晒究竟在防什么？太阳会发出紫外线，而根据波长的不同，紫外线分为UVA、UVB、UVC三种。让我们晒黑晒伤的，主要是阳光中紫外线的中长端，即是我们熟悉的UVA、UVB，我们把紫外线中的其他波段的所有光统称为不重要光，因为它
Recommend
About Joyk
Aggregate valuable and interesting links.
Joyk means Joy of geeK