![Screenshot of youtube.com: A laser pointer at 2B FPS [video]](https://hn.urlbox.com/shots/renders/2025/10/20/41ad08cb-c2b9-4d4f-b687-14f29a0ccefb.jpg)
A laser pointer at 2B FPS [video](youtube.com)
574 points by thunderbong | 97 comments
AlphaPhoenix YouTube video filming a laser pointer beam at 2 billion frames per second to visualize light propagation.
#laser on Hacker News
1 story tagged laser, newest first.