This fascinating TED talk was given last month by MIT researcher Ramesh Raskar on his femto-photography camera that snaps images at a whopping one trillion frames per second — a rate so fast that it can capture light in motion. The technology may one day be used to build cameras that shoot around corners or see into the human body without X-rays.
Posts Tagged ‘femtophotography’
According to the smart folks over at MIT, this video shows footage that was captured at an unbelievable one trillion frames per second. It appears to show some kind of light pulse traveling through some kind of object. Here’s a confusing explanation found on the project’s website:
We use a pico-second accurate detector (single pixel). Another option is a special camera called a streak camera that behaves like an oscilloscope with corresponding trigger and deflection of beams. A light pulse enters the instrument through a narrow slit along one direction. It is then deflected in the perpendicular direction so that photons that arrive first hit the detector at a different position compared to photons that arrive later. The resulting image forms a “streak” of light. Streak cameras are often used in chemistry or biology to observe milimeter sized objects but rarely for free space imaging.
In November 2010, we reported that MIT scientists were working on a camera that would be able to see around corners using echos of light. Well, this is that camera. Insane.