1 For this vehicle, the main source of illumination will come from the left.

2 Artist were certainly aware of light, but (judging from their paintings) light served only as a source of illumination and did not affect the appearance of an object.

3 LED light sources complying with these specifications are utilized as the source of illumination in lighting products that comply with the appropriate end-product standard as listed below.

4 An analysis of a passive seismic method for subsurface imaging is presented in which ambient seismic noise is employed as the source of illumination of subsurface scatterers.

5