Small cavity features on putting green

Usage examples of pinhole.

Behind the plane where the interference pattern forms, Afshar places a lens that forms an image of each pinhole at a second plane.

Then Afshar measures the difference in the light received at the pinhole images with and without the wires in place.

In fact the Misses Graves had already arrived when she left, and no sooner had she gone when Miss Pinhole, who did a lot of dressmaking for Miss Fielding, rang the bell.

Pinhole penetrations of the black object by micrometeorites should not be much of a problem, since the occulter could be designed to self-seal around small penetrations.

Moreover, even if the occulter developed many pinholes, the diffraction effects would spread the penetrating light over an area much larger than the images of interest, reducing its effect.

For fifty tals I let three units of light shine full in the pinhole, then one unit for one xat, and for twenty-five tals nine units.

The wood was covered in pinholes and here and there rusted metal pins still stuck out of it, attaching blackened shards which were all that remained of some covering material.

The lasers were meant to implode a deuterium pellet at the shell's heart and direct the resulting plasma down a pinhole pathway aligned with the axis of the gun barrel.

The Oldest One was like a hydraulic engineer transfixed at the base of a hydroelectric dam, watching a thin needle of water spurt hundreds of meters into the air, out of an almost invisible pinhole.

There was nothing wrong with the idea of a pinhole camera eye, whose retina was composed of olfactory nerve endings rather than the rods and cones of photosensitive organs.

They photograph through perforations : half a dozen pinholes and the lens can see perfectly.

Other crustaceans have a compound eye like insects (really a bank of lots of tiny eyes), while other molluscs, as we have seen, have a lensed camera-eye like ours, or a pinhole camera-eye.

It looks at the stream of frames (individual still images) coming from the pinhole camera and notices that, although the total amount of data in those frames is rather large, the difference from one frame to the next is tiny.

I ask each of my students to make a pinhole camera like this, and to experiment with it.

It seemed like she was straining to see through these narrow apertures in order to magnify her field of view--much in the manner of a pinhole camera.