Re:My observations during the explosion at Trinity (1945)
by SamReidHughes on Tuesday October 18, 2016 @04:39PM
(#12738445)
From the article: "This is 1/100,000,000th of a second after the first photo."
A 100 millionth of a light-second is about 10 feet, the tower was 100 feet. So that couldn't have been the time between exposures, and they used multiple cameras anyway.
The Wikipedia article https://en.wikipedia.org/wiki/Rapatronic_camera says the exposure times were several microseconds.
Re:My observations during the explosion at Trinity (1945)
by lobster_johnson on Tuesday October 18, 2016 @07:15PM
(#12739596)
I don't think that's the first image in the sequence, just the most famous one. They took a lot of images in sequence. Here they are edited together into a sequence (several series, presumably from multiple tests, unfortunately looks a bit incomplete): https://m.youtube.com/watch?v=KQp1ox-SdRI
Re:My observations during the explosion at Trinity (1945)
by mirimir on Tuesday October 18, 2016 @07:19PM
(#12739618)
I gather that some of the lumpiness is caused by imperfections in the strength and time synchronization of the implosion. Ideally, you'd see spheres. There are also bumps caused by flanges, ports, etc in the casing.
Re:My observations during the explosion at Trinity (1945)
by agumonkey on Tuesday October 18, 2016 @03:25PM
(#12737822)
I didn't know Edgerton name, nor how many things he shot at the time. https://www.youtube.com/watch?v=gspK_Bi0aoQ
He took high-speed photography to the ultimate limits, at exposure times of 10^-8 seconds, and the pictures are absolutely eerie looking. Some are like gaping skulls of pure energy, like this one:
https://upload.wikimedia.org/wikipedia/commons/e/e9/Tumbler_...
http://petapixel.com/2014/03/05/rapatronic-camera-atomic-bla...