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有關太陽眼鏡防UA
發問:
想請問一下,,SUNGLASS 點解可以防到UV,,個原理係咩?? 如果有英文解釋更好=]] THZ
最佳解答:
Sunglasses are tinted plastic polymers that filter out light (including ultraviolet) of particular frequencies. The UV-A and UB-B are absorbed by these polymer molecules. Since reflected visible and UV light from a surface are plane polarized, many sunglasses make use of Polaroid lenses to block off the polarized light, thus reducing glare. You may refer to the following web-page for details: http://answers.yahoo.com/question/index?qid=20080721120427AAOaTkc
有關太陽眼鏡防UA
發問:
想請問一下,,SUNGLASS 點解可以防到UV,,個原理係咩?? 如果有英文解釋更好=]] THZ
最佳解答:
Sunglasses are tinted plastic polymers that filter out light (including ultraviolet) of particular frequencies. The UV-A and UB-B are absorbed by these polymer molecules. Since reflected visible and UV light from a surface are plane polarized, many sunglasses make use of Polaroid lenses to block off the polarized light, thus reducing glare. You may refer to the following web-page for details: http://answers.yahoo.com/question/index?qid=20080721120427AAOaTkc
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