In a uniform medium light travels in straight lines.

在均匀介质中光沿直线传播。

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The relationships between the number of diffraction order and grating pitch, refractive index of medium, light wavelength, incidence Angle and azimuth Angle are investigated.

讨论了入射角、入射方位角、入射光波长、光栅栅距、介质折射率与矩形光栅衍射级次数目间的关系。

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Medium-light with an olive hue.

浅到中等橄榄色。

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The name draws on old ideas about a supposedly ubiquitous, invisible medium that helped light propagate.

BBC: Original Ethernet diagram, 3Com

Its engine segment (49% of net sales in 2010) produces a wide range of engines that run on diesel and natural gas used in heavy-, medium- and light-duty trucks, buses, automobiles, RVs, and industrial vehicles.

FORBES: CMI Ready To Rev Higher

To get Anderson localisation to operate in a random laser has not been easy, mainly because it is hard to find a substance that both acts as a high-gain medium and scatters light very strongly.

ECONOMIST: Microlasers