The phrase "amount of illumination" is correct and usable in written English.
It can be used when discussing the level or intensity of light in a particular context, such as photography, lighting design, or scientific measurements.
Example: "The amount of illumination in the room was insufficient for reading comfortably."
Alternatives: "level of light" or "intensity of light".
Mr. Levy said this type of lighting, which has been installed in newer traffic lights, uses 75percentt less electricity but provides the same amount of illumination.
One lux (Latin for "light") is the amount of illumination provided when one lumen is evenly distributed over an area of one square metre.
Thirty-five hundred years later, a contemporary of Thomas Jefferson's could buy the same amount of illumination, in the form of tallow candles, by working for about five hours and twenty minutes.
Admittedly, this unusual memory requires an internal light source, but the amount of illumination required is tiny and consumes less power than the logic circuits that are used to read data in and out.
The amount of illumination on all desks from 8 a.m. to 4 p.m. for different scenarios was analyzed in the BLDF system.
It allows previewing the effect of lighting in a target space and quantifying the amount of illumination with real-time visual feedback.
Junichi Haruyama, of the Institute of Space and Astronautical Science, in Sagamihara City, and his colleagues photographed places inside Shackleton that, though they receive no direct sunlight, do get a small amount of scattered illumination from other parts of the crater.
Dim external lighting is not necessarily a problem, but when the amount of external illumination changes within one specific capture, the fringe algorithms fail and produce these patterns.
Then under suitable illumination they absorb a large amount of light (Fig. 1(b)).
Thus, an aperture stop determines the amount of light that traverses an optical system and hence determines the image illumination.
Further optimization of interference fringe visibility is accomplished by balancing the amount of light in the reference and test beams by rotating the polarizer in the illumination system.
