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I looked up, and at each flash of lightning, an after-image of a bird was left.
Tate has acquired this smaller installation, two curved rooms where changing coloured lights exploit the effect of retinal after-images.
I stared at it long after it had vanished, the after-image imprinted on my retina.
They could also be after-images, hypnagogic imagery, or memory images with subliminal material that was not veridical.
Focus on the after-image of the light, without moving your head, until it completely vanishes.
The blaze began to die down, the flames diminished until all that was left was the dull reddish after-image.
In low light, they create after-images, just like stained glass.
Yet the image of the landscape lingered in his eyes, an after-image caused by the brilliant bolt of energy.
‘After spending that day just staring at the space where the buildings were, it was as if there was an after-image imprinted on your retina, and there's something of that in the towers of light,’ he said.
Blooming out fogs the screen by producing a temporary after-image.
Move the eye to the left of the canvas after focusing on the stripes and after-images appear.
But after-images (of complementary colour and brightness) can be caused by staring intently at any pattern of high contrast.
Such complementary colours produce the greatest reciprocal enhancement by simultaneous contrast when juxtaposed; also when negative after-images are produced, these will be of the colour complementary to that which produces them.
But if you squint, or view the design at a distance, it morphs in the mind's eye into a much more conservative composition, very much the after-image of its symmetrical Central Park West forebears.
When I stand up, that after-image remains fixed in my visual field.
We only get brief pulses of memories, like a flash bulb going off in your face, leaving the after-image lingering onscreen for a few seconds.
If you stare at a bright colour for a time and then look at a white surface, you will see an after-image, which will be the subtractive complement.