Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版：英文原文完整保留，中文紧随对应单元；术语采用 v20260916 确认表，自动语义审校结果可追溯。

Atomic Spectra

原子光谱

Helium spectrum
氦谱
Argon
氩
Hydrogen
氢
Helium
氦
Iodine
碘
Nitrogen
氮气
Neon
氖
Mercury
水星
Sodium
钠

At left is a helium spectral tube excited by means of a 5000 volt transformer. At the right of the image are the spectral lines through a 600 line/mm diffraction grating.

图左是通过5000伏变压器激励的氦气谱管。图右是通过600线/毫米衍射光栅得到的谱线。
Helium
wavelengths (nm)
氦的波长(nm)
438.793 w
443.755 w
447.148 s
471.314 m
492.193 m
501.567 s
504.774 w
587.562 s
667.815 m
s=strong, m=med,
w=weak
s=强, m=中, w=弱
Helium energy levels
氦能级
 Index

Reference
Jenkins & White
Ch. 21
索引参考Jenkins & White 第21章
 
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Atomic Spectra

原子光谱

Nitrogen spectrum

氮的谱线
Argon
氩
Hydrogen
氢
Helium
氦
Iodine
碘
Nitrogen
氮气
Neon
氖
Mercury
水星
Sodium
钠

The nitrogen spectrum shown above shows distinct bands throughout the visible range. The blue lines in the above were brightened for greater visibility in the image.

上图显示了氮气谱在可见光范围内有明显的谱带。上图中的蓝色线条为了在图像中更清晰而被增强。
 Index
索引
 
HyperPhysics***** Quantum Physics
HyperPhysics ***** 量子物理
R Nave
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