direct lighting

noun

1. lighting in which most of the light is cast directly from the fixture or source to the illumined area.

direct lighting

noun

1. electrical engineering a lighting system in which a large proportion (at least 90 per cent) of the light is directed downwards

Word History and Origins

Origin of direct lighting¹

First recorded in 1925–30

Example Sentences

Direct lighting means that the rays from the lamp go directly into the room (Fig. 45).

From Project Gutenberg

For direct lighting, the engine must be governed so as not to vary more than five per cent in speed between no load and full load.

From Project Gutenberg

This difficulty may be due to the poor contrast of the ridges and furrows when using direct lighting.

From Project Gutenberg

When photographing a small curved surface such as a test tube, direct lighting will usually create a high light.

From Project Gutenberg

Don't try to operate your spark coil with 110-volt direct lighting current without connecting in a rheostat.

From Project Gutenberg