Man Builds Two Billion Fps Camera That Records at the Speed of Light
Posted2 months agoActive2 months ago
petapixel.comResearchstory
excitedpositive
Debate
20/100
High-Speed CameraPhotography TechnologyScientific Innovation
Key topics
High-Speed Camera
Photography Technology
Scientific Innovation
A man has built a camera capable of recording at 2 billion FPS, effectively capturing events at the speed of light, sparking interest and discussion about the technology's potential applications.
Snapshot generated from the HN discussion
Discussion Activity
Light discussionFirst comment
11m
Peak period
2
0-1h
Avg / period
1.5
Key moments
- 01Story posted
Oct 31, 2025 at 3:28 PM EDT
2 months ago
Step 01 - 02First comment
Oct 31, 2025 at 3:39 PM EDT
11m after posting
Step 02 - 03Peak activity
2 comments in 0-1h
Hottest window of the conversation
Step 03 - 04Latest activity
Oct 31, 2025 at 4:54 PM EDT
2 months ago
Step 04
Generating AI Summary...
Analyzing up to 500 comments to identify key contributors and discussion patterns
ID: 45775768Type: storyLast synced: 11/17/2025, 8:11:13 AM
Want the full context?
Jump to the original sources
Read the primary article or dive into the live Hacker News thread when you're ready.
"Single-shot real-time femtosecond imaging of temporal focusing" (2018) https://www.nature.com/articles/s41377-018-0044-7
"Filming the Speed of Light at 10 Trillion FPS" (2019; The Slow Mo Guys) https://youtube.com/watch?v=7Ys_yKGNFRQ&
So he needs 1 recording for each pixel.
The sensor is uber sensitive, as in 1 photon.