What is "filtering down"

Usage examples of "filtering down".

Or do you not notice the light dripping into the earth from the sky, filtering down all around us and soaking into the ground at our feet?

Sun was filtering down through the leaves, making spots that swam like golden fish as the wind moved the trees.

Dim green light filtering down gave the path an eerie quality of unreality.

It was made of gleaming silver metal and sparkled in the daylight, the suns rays filtering down in the wake of the storm that had passed only moments ago.

If the armies were filtering down the narrow passes out of the steppes, north and south, then she and Agradeleous could catch them m a vulnerable position indeed.

The ceiling in the entryway was two stories high, light filtering down through a series of windows that followed the line of the wide stone stairs curving up to the left.

The gleaming blade of the fast-moving knife reflects explosive flashes of the sunlight that are filtering down through the thin canopy of branches high above the village.

It was a miserable slog through the hilly countryside with a drizzle filtering down through beech and oak forest.

Bosch flipped up the NVGs and saw shadowy cones of bluish light filtering down every hundred feet or so from manholes and drains.

In the soft light filtering down through chinks in the rocks above, the whole thing looked hunched and waiting.

Sarah stepped forward into the partial light filtering down from above.

At first it was quite dark, with the morning brightness filtering down only a short way, but gradually the steps opened out on to a broad torchlit corridor.

He felt as if he were swimming through an underwater corridor with shimmering lights filtering down from above.

I watched the moonlight filtering down through the branches, and tried to stop my tears.

How much was carried into the upper atmosphere and has been filtering down since?