The phrase "additional illumination" is correct and usable in written English.
It can be used when referring to extra light or metaphorically to provide more information or clarity on a subject.
Example: "The report provided additional illumination on the factors contributing to the project's success."
Alternatives: "further clarification" or "extra insight".
Additional illumination was provided by long, cylindrical white lights hanging from the black ceiling.
Now under most circumstances, additional illumination in a drama is as welcome as wintertime warmth.
But unlike Mr. Hido, who uses only ambient light, she employs her car headlights for additional illumination.
An additional illumination source for measuring particle velocity in CGDS and DMD processes is used.
In some passive systems the camera may provide additional illumination during focusing, sometimes called an autofocus assist light.
It is highly unlikely, however, that this additional illumination will do anything to convince Americans that earmarks do not still equate to bribery — my vote for your bill in exchange for my earmark being included in legislation (however unrelated).
However, the fluorescence of environmentally-insensitive mCitrine fused to either Ci-VSD or CBL1 in root cells remained largely unchanged under additional light illumination at all wavelengths (Additional file 6: Figure S6, middle and bottom), demonstrating that not all GFP-related fluorescent proteins respond in a similar manner to additional light.
The power efficiencies of the new A8 chip in the iPhone 6 models should help offset the additional screen illumination and pixel computation demands.
The reticle collimation optics are situated at 90° to the optical path making lighting difficult, usually needing additional electric illumination, condensing lenses, etc.
The authors investigate the physical alteration of rear-side characteristics in the context of an additional rear-side illumination.
The presence of simple Gaussian noise is commonly reduced using a median-filter [4] but to counter varying illumination additional filtering must be used.
