Photodynamic therapy involves the injection of a light-sensitive medicine called verteporfin into a vein in the arm.
That's the trick performed by holographic disk drives, which record a series of 1-million-bit chunks of data as holographic "pages" inside a light-sensitive plastic medium.
The goal was to substitute photoreceptors with a light-sensitive material capable of restoring photosensitivity to the retina, by easing down the retina on a layer of organic photovoltaic semiconductor.
This, Dr Silver is convinced, is because the activity in the light-sensitive neurons somehow activated a latent nerve pathway that spans both sides of the spinal cord, allowing them to synchronise.
The great advantage of a more light-sensitive camera is that you can make radical adjustments to the aperture, allowing filmmakers to indulge in what's become known as "bokeh porn" shallow depth-of-field shots in which sharply defined subjects are placed against artily smeared backgrounds.
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D. from Stanford and made his breakthrough almost immediately after starting his own lab in 2004, taking advantage of a 2002 discovery of light-sensitive proteins in green algae called channelrhodopsins.
The truth is, most bad headaches -- the ones that make getting through the day a chore or make you feel nauseated or sensitive to light -- are the Big M.
S1420's highly sensitive sensor can take realistic-looking, detailed photographs in a low light scene.
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Threaded on a wire one-fifth the thickness of a human hair, these tiny seeds of light can be injected to activate special networks of light-sensitive neurons.
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Dr Hoch's team extended this idea, arguing that as a plant starts to disassemble its light-gathering apparatus in preparation for winter, its leaves become particularly sensitive to light damage.
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