I have used such lights before, which merely light what is just in front of you, but anything at arm's length is fairly wellilluminated and progress can be made easily enough.
The feasibility and effectiveness of the reactive power compensation retrofitting for the low voltage gird of an area are illuminated, as well as the steps and technical difficulties of the retrofit.
Illuminated by the thought of VE (Value Engineering), the model describing the degree of the customer's satisfaction is presented, as well as the strategy of price respond.