A camera that can see around corners

Started Aug 19, 2012 | Discussions thread
wfektar
Contributing MemberPosts: 694
Like?
Buzzwords much?
In reply to Biological_Viewfinder, Aug 21, 2012

Biological_Viewfinder wrote:

http://www.cnn.com/2012/08/19/opinion/raskar-camera-corners/index.html?hpt=hp_c1

Why is this relevant to you? Well think of it this way, if we can make a camera with a 1 trillionth shutter speed, the ISO would have to be equally comparable or there would be almost no light visible on the sensor.

Aside from the fact that the linked article is a puff piece of little content, it doesn't follow that just because you can see a pulse of less than 1 trillionth of a second you have all that sensitive of a detector. Try this: a pulse of 1 microjoule and one ten-trillionth of a second has what sort of peak power? One watt = 1 joule/second.

(back when I was a grad student we'd generate pulses of white light by focusing a femtosecond pulse into plain water. The water didn't absorb at that wavelength, but the field strengths were so high it didn't matter. Look up "continuum generation".)

Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow