Scientists at M.I.T's Media lab have created a camera that can capture the speed of light, taking a photo in less than two-trillionths of a second. Using multiple cameras, sensors, a pulse light source and mirrors, the researchers create slow motion movies of light moving through objects and liquids. They call the technique femto-photography.
.The project started as an effort to build a camera that looks around corners, Raskar told The New York Times's John Markoff. What began as an attempt to capture and compute the path of the reflected light, turned into this femto-photography.The M.I.T Media Lab explains how it works:
A laser pulse that lasts less than one trillionth of a second is used as a flash and the light returning from the scene is collected by a camera at a rate equivalent to roughly 1 trillion frames per second. However, due to very short exposure times (roughly one trillionth of a second) and a narrow field of view of the camera, the video is captured over several minutes by repeated and periodic sampling.
A laser pulse that lasts less than one trillionth of a second is used as a flash and the light returning from the scene is collected by a camera at a rate equivalent to roughly 1 trillion frames per second. However, due to very short exposure times (roughly one trillionth of a second) and a narrow field of view of the camera, the video is captured over several minutes by repeated and periodic sampling.
MY THOUGHTS
The concept of this video really interested me because it is a massive breakthrough in the world of science and the study of light everywhere. We now know more about light and the way to capture light. the fact this this happens all the time and it seems like nothing but when looked at in detail and put lots of knowledge onto, it brings really cool results. It lets people see what actually happens when light goes through a bottle full of water, its more cooler than what you would initially expect it to be. |
|