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A laser pointer at 2B FPS [video]

(www.youtube.com)
615 points thunderbong | 4 comments | 19 Oct 25 06:42 UTC | HN request time: 0.631s | source
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dist-epoch ◴[20 Oct 25 21:33 UTC] No.45649665[source]▶
Techniques like this are/were used to film nuclear explosions (but with a single explosion).
replies(2): >>45650007 #>>45650099 #
01HNNWZ0MV43FF ◴[20 Oct 25 22:03 UTC] No.45650007[source]▶
Scanning a single pixel over an image? How does that work with an explosion? The laser pointer is reproducible
replies(1): >>45650312 #
1. bob1029 ◴[20 Oct 25 22:37 UTC] No.45650312[source]▶
https://en.wikipedia.org/wiki/Rapatronic_camera
replies(2): >>45650387 #>>45650451 #
2. snitty ◴[20 Oct 25 22:45 UTC] No.45650387[source]▶
But that bears no relation to what happened in the video.
3. masfuerte ◴[20 Oct 25 22:54 UTC] No.45650451[source]▶
The rapatronic camera had an incredibly fast electronic shutter. To record a video they needed one camera per frame. Rather like "bullet time" in the movies. The technique in the youtube video is completely different.
replies(1): >>45650589 #
4. fluoridation ◴[20 Oct 25 23:10 UTC] No.45650589[source]▶
It's not completely different. I'd argue it's the exact opposite. Instead of using a single single-pixel camera to record video of a repeatable event, a sequence of regular film cameras captured photographs of an unrepeatable event.