It had internal illumination, but there were no power wires leading to it.

Immediately the internal illumination dimmed, as the systems cut power.

This covered an aperture in the bodywork to provide internal illumination.

Practical applications, such as close internal illumination during dentistry, appeared early in the twentieth century.

I wanted to do something with the water here, internal illumination of the surf, but they say that's not possible.

There was some internal illumination, though, maybe from candles or a hurricane lamp.

We will have to rely on our own internal illumination, Albert.

"There must have been some form of internal illumination once," said Rorden absently.

Eye lenses were first shown as blank, white discs, sometimes featuring internal illumination.