凹镜

āo jìng

意思解释:(Sunken lens)见“凹面镜”。

凹镜的意思

球面镜的一种。反射面凹进去,能使入射的光线会聚在镜前的焦点上。如果光源在焦点上,所发出的光经反射后就形成平行的光束。探照灯和太阳灶中用的都是凹镜。也叫凹面镜āomiànjìng。…

凹镜是什么意思

A kind of spherical lens. Reflection face is sunken go in, can make incident radial assemble is on the focus before lens. If illuminant is on the focus, the smooth classics that gives out forms parallel beam of light after reflection. What use in searchlight and sun kitchen is sunken lens. Also call ì of Nj of à of Omi of concave mirror ā Ng. ...

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