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Filming the Speed of Light at 10 Trillion FPS

The Slow Mo Guys
Demos
YouTube
Cited on HN 6 times, 2019–2025, never outright recommended score 0
Years with an HN recommendation, 2007–2026

Used as the standard reference whenever HN discusses filming light or ultrafast cameras.

The Slow Mo Guys visit a lab with a camera capable of filming at 10 trillion frames per second, fast enough to see light travel. They show the setup and the resulting footage.

“The slow mo guys did a video [1] at 10 trillion FPS.” (HN, 2025)

6 citations · Demos

6 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@teleforce Aug 2022 Cites it
on HN thread Excel never dies (2021)
Read more
Your story reminds me of this research lab with state-of-the-art 10 Trillion FPS camera. From the video they apparently are still using Windows 7 for the measurement set up [1]. They're publishing in Nature and most probably using Excel for some of their data processing workflow. My former research lab is, however, mainly using Igor Pro software running on Windows. It is waves based professional data processing software tool that has friendly GUI and intuitive table interfaces not unlike Excel but geared towards scientists and engineers [2]. [1]Filming the Speed of Light at 10 Trillion FPS: [this video] [2]IGOR Pro: [link]
Shows lab using Windows 7 with state-of-the-art camera.
@rhdunn Aug 2025 Cites it
on HN thread Los Alamos is capturing images of explosions at 7 millionths of a second
The slow mo guys did a video [1] at 10 trillion FPS. They also recently did another video [2] at 5,000,000 FPS. Their other videos vary between 50,000 FPS and 850,000 FPS. Edit: They mention in [2] that the Phantom camera they have can go to a 95ns exposure up to 1,750,000 FPS. [1] [this video] [2] [link]
10 trillion FPS video from Slow Mo Guys.
@pbronez Oct 2025 Cites it
on HN thread A laser pointer at 2B FPS [video]
The slowmo guys did a video about a similar setup at CalTech [this video] It’s super cool that AlphaPhoenix is able to get comparable results on his garage. These academic versions use huge lab bench optic setups. They wind up with technically higher quality results, but AlphaPhonix’s video is more compelling.
Similar setup at CalTech with huge optics.
@westurner Oct 2025 Cites it
on HN thread Man Builds Two Billion FPS Camera That Records at the Speed of Light
"Visualizing video at the speed of light — one trillion frames per second" (2011; MIT) [link] "Single-shot real-time femtosecond imaging of temporal focusing" (2018) [link] "Filming the Speed of Light at 10 Trillion FPS" (2019; The Slow Mo Guys) [this video]
Entry in a list of light-speed imaging references.

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