It was below ground level, so that although the day was brilliantly sunny the room was sunk in the gloom of fluorescent lighting.

They followed Highhawk's body into the bright fluorescent lighting of the conservancy laboratory.

This is fluorescent lighting which has most of the elements of natural daylight, unlike most commercial lighting which is deficient in these.

Another project is to find ways of using the colour cast of fluorescent lighting to enhance the photograph.

The other technique for balancing fluorescent lighting is to use photographic lamps.