Though your images are so often photographed at night (or in the dark), they always remind me -- and these in particular -- that the medium of photography is first about light.
Reading
The Photograph by Harald Mante, this stuck in my mind:
According to Wassely Kandisky, 'The point is the result of the first meeting of the artist's tools with the material, with the basic surface.' In photography light takes over the role of the tools. A small source of light in a dark area or the reflection of light from a small bright object on an otherwise dark surface results in a mark on photosensitive material, which is comparable to the contact of a pencil or brush on paper or canvas."
How beautifully these images illustrate that concept.