辐射

• Most light sources do not radiate equally in all directions .
  大多数光源并非在所有各方面都等量地辐射。
• Materials through which no radiation is propagated are called opaque .
  辐射线不能透过的物质叫不透明体。
• Weapon scientists developed the reduced residual radiation bomb .
  武器科学家们研制了减弱遗留辐射的核弹。
• Theory thus predicts that there will be a flare of infrared radiation .
  因此，理论预言会有红外辐射耀发。
• Total radiation instruments employ some broad spectral band sensors .
  全辐射仪器要使用某些宽频带传感器。
• Infrared radiation has wavelengths longer than those of visible light .
  红外辐射的波长比可见光的波长长。
• The sun has been emitting energy at this rate for billions of years .
  太阳以这样的强度辐射已有10亿年之久。
• The radiation was filtered either by borosilicate glass or by quartz .
  辐射光源或用硼硅酸盐玻璃或用石英过滤。
• Remarkably enough, radiation of exactly this kind has been discovered .
  非常出乎意外，恰恰是这种辐射被发现了。
• A blackbody radiator will therefore appear black in all inertial frames .
  一个辐射黑体在一切惯性系中都呈现黑色。