Boffins at Columbia University in the USA have maybe started a revolution in Digital Photography and video. Their goal was to create a camera that was untethered and standalone that could still produce visual information. Crucially the camera was needed to power itself. Almost like perpetual motion, only in a visual sense.
Cameras measure light and as we all know light can produce energy. This camera not only uses that light to take the image, but to also power the camera. In their tests they were able to put the camera in a well lit room and indefinitely produce a video. They call this technique "eternal camera".
It does sound a little like a solar powered camera, however the difference with this device its actually a photo powered camera. The camera uses the light that enters the lens to power the camera. Basically it take a portion of the light that is used to take the image to power the next image.
OK the image size is only 30x40 and maybe its not something that would be useful now, however in the future for photography this could be the start of a revolution to ditch the battery.
To find out more visit the project at University of Columbia. Let us know what you think in the comments below.