Japanese scientists have developed a new high-speed camera capable of capturing more than 4 trillion frames per second. The camera uses a new approach - femtophotography - to achieve this terrifying speed. Current high-speed cameras, capable of shooting thousands of video frames per second, allow us to see things that are usually invisible to the naked eye, such as a bullet passing through an egg or a water balloon exploding.
High-speed cameras can help researchers study physical phenomena such as shock waves and mechanical processes. Now, researchers at KEIO University and the University of Tokyo have spent three years developing a new ultra-high-speed camera that puts its predecessors to shame and can shoot 4.4 trillion frames per second, a thousand times better than the competition.
The research group published their findings in the journal Nature Photonics, which explains how the camera works. Currently, high-speed cameras utilize the so-called time-resolved spectrum. The disadvantage of this method is that it requires repeatedly shooting smaller parts to build a larger image, taking up more time. The new method is based on the femtophotography technique of motion and uses a single pulse string for image acquisition. This means that there is no need to repeat measurements and explain why the new method is so fast. The camera works by mapping the spatial distribution, the position and shape of objects in space over time.
The researchers hope that this ultra-high-speed camera can capture processes previously invisible to science, including chemical reactions, lattice vibration waves, plasma dynamics, and even heat conduction.
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Posted on 4/20/2015 10:18:10 PM
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Posted on 4/22/2015 8:28:21 AM
