blurb:
So apparently buying a high speed camera wasn’t enough, because after two videos with it I decided to build my own, but 5 orders of magnitude faster…
In this video I’m filming the motion of light as it flies across my garage at… well, the speed of light! It’s fast. So fast that even with my best setup so far, I get 18 frames of video from one end of the room to the other, and those frames have a lot of temporal blur so realistically each “frame” is actually kind of an average of the information that by right should belong to 5-10 frames. It’s a mess, but it works.
I’m using the technique from the electricity waves video where I used repeated oscilloscope measurements synced after the fact to produce “videos” of electricity moving down a wire. The only difference is that instead of measuring electricity waves, I’m measuring light emitted by a laser, bouncing off the wall, traveling to my camera, and landing in the window of a photomultiplier tube. UNLIKE the electricity waves video, this setup (thankfully) is automated, and an optics assembly slews across angle space, building up a 3d dataset of video, collecting all the time information from each pixel sequentially.
It’s a really fun project that I’ve wanted to do for a long time, and just recently got pulled together.
Once you go 1mil fps you can’t go back
all cameras watch light move, it’s all they do
If you liked this definitely checkout some of his other videos. At the level of work that he does you have to have a really solid model of reality and a lot of learned experience of how to measure and manipulate at extreme scales. He makes it look easy but this kind of thing really isn’t. Just a lot of fun seeing such a talented and educated person do a really neat demonstration.
Notably, he’s also the inventor of the magneto-turboencabulator.
Nice, I remember encountering a sales pitch for an earlier version of this sort of device:
The description that boiled down to, it squeaks, was really well written.
Also it was released on the perfect date.
I just watched this a few hours ago and it’s really cool! I never thought something of this speed would be possible in a garage with $1k or so in parts.
I remember this being a thing several years ago. The researchers in the video I originally saw used a Coke bottle.
Yeah and they stuck a label on the coke bottle presumably because some lawyer was worried about unintentional product endorsement.
“Hey light moves through their bottles that means it’s a good product.”
Yes he talks about that in the video. The researchers used $500k+ of equipment. He built a similar thing for under $1k
Neato
Fuckin YouTubers
Here’s a 30 minute video of me waffling about 4 seconds of what you actually wanted to see
You know there’s a seek bar on youtube videos?
I mean, he does show the final product pretty early on. Plus as others said, the video (and most of the channel) is about how and why it works, which to me is much more interesting than the 4 second clip.
So you don’t want to watch anything about how it’s done or how it was built?
I suggest TikTok then. Or just don’t click on things you don’t really want to learn about.
Odd take.
I for one love AlphaPhoenix and I prefer longer form videos. I don’t want the look what I did, but I want the this is how I did it.
Piss off to TikTok if you just want to be mindlessly fed short form trash.
