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理学
光
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光
在物理学中指的是各种波长的电磁辐射。但通常说的光,常狭义地指能引起人眼视觉的波长介于400~760纳米的电磁辐射,即可见光。广义上说,光包括各种波长的电磁辐射,其中有无线电波、微波、太赫兹辐射、红外线、可见光、紫外线、X射线、γ射线。
Physics
光学、声学
光学
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光
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Head of Alexander
head of an arrow
head of comet
head office
Head Office of Xinhua Bookstore
head of hydraulic turbine
head of hydroelectric power station
head of painted pottery goddess
head of pump
head of the Directorate of Education (official name)
head of the line processor sharing
head-of-the-line processor sharing
Head-on
head-on collision
head-on cross-section
head-on encounter
head ornaments of a female role
head or tail
headphone
Head Portrait of Jade God from Xiaojiawuji Site
Head Portrait of Sargon
head positioning mechanism
headprism
head process
headquarters model
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