The Wild Cherry/Sweet Cherry Tree

 

Prunus avium, commonly known as the wild cherry or sweet cherry, is a species of cherry tree native to regions within Europe, Anatolia, Maghreb, and western Asia. The species is widely cultivated, and has become naturalized in both North America and Australia.

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A widefield sample of wild cheery bark. Notice the different cell sizes change over a given area.

The wild cherry is one of two species of cherry that supply the world’s cultivators of edible cherries.

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10x magnified area of the sample. Here complex structures are more visible, giving a more in depth look into the cells.
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Interesting components are sometimes present within the sample. This foreign structure appears to have become part of the sample.
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Different cells make up the sample of the wild cherry tree. Each cell has a given purpose to maintain health and continued growth.

The tree is also cultivated as timber, and is a highly valued hardwood that is used for woodturning, to create furniture cabinets and musical instruments. The wood is also used for the smoking of meats in North America, giving a distinctly pleasant flavor to both pork and poultry.

The Slowest, and Fastest, High-Speed Camera

Femto photography allows us to see how photons behave, in a visual format.
Femto photography allows us to visualize how light behaves, using an array of image sensors to capture the movement of bullets of light fired from a laser.

Hello everyone! My name is Andrew Palmer, and I’m majoring in Imaging and Photographic Technologies. I’ve been doing photography in some form or another for the better part of a decade, and love everything about creating images. Previously, I was working at Aberdeen Proving Ground as a photographer and videographer for Jacobs Technology. I also was a lab manager for a few years at my local community college, which involved managing computers, equipment checkout for students, and assisting students in completing their projects.

I wanted to share with everyone something I think is a really interesting topic, called femto-photography. This method of imaging allows us to visualize the propagation of light. Using a pulsing laser that fires roughly around every 13 nanoseconds, a streak camera is triggered that captures images down to the picosecond. Then the images are stitched together, allowing us to view the motion of light. Effectively, the camera speed is about a trillion frames per second. Neato!

The potential uses of this technology are promising, in fields such as medical imaging, industrial imaging and machine vision, to computational photography— where it can be used to render and relight photos using computer graphics. It also serves a valuable educational tool, as we can actually now see how light behaves as it bounces off objects, is absorbed, diffracted, and gain a greater appreciation for what we see.

I’d like to thank Ramesh Raskar’s assistant Margaret Church, for keeping in contact with me and granting permission for the use of showing the exciting work Dr. Raskar’s been working on. I also would like to thank the tireless efforts of the team working on the project, as well as the femto-photography members who make all this hard work possible. If anyone is interested, they should check out their website to learn more.

http://web.media.mit.edu/~raskar//trillionfps/