In essence, quantum dots are used to change the colour of the light.

本质上而言，量子点是用来改变光线的颜色。

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After all, the essence of the photographic art is the process of capturing light from the scene in order to create an artistic rendering.

毕竟，摄影艺术的本质就是通过捕捉某个场景的光线来创造一种艺术的演绎。

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The technique can image variations in what is known as the refractive index of air - in essence, the speed of light in a given medium.

这项技术能够使空气折射率图形化-本质上就是特定介质下的光速。

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Ms. DE BOURBON-RODRIGUEZ: He was electric on stage and the cues for the girls or the musicians coming in to the arrangement would be also enhanced by light cues that would come off of his fingertips in essence.

NPR: Having a Ball with Juan Garcia Esquivel

You still have a light bulb or lamp as your picture source, but that's the essence of the similarities.

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