Entry 29

When your placing a clear plastic or glass bottle on a table there's this thin ring of light that surrounds the object. This ring seems to shrink the closer the bottler gets to the table and grow the farther it is moved from the table. When it is far away the ring is big but very fuzzy and as it gets closer it sharpens. Some how the bottle is focusing the light around it and creating this ring? What part of the bottle creates this ring, does it originate from the bottom or the middle of the bottle? How do different light sources affect the ring and when is it most visible?