![Screenshot of youtube.com: Cross sectioning insects in an electron microscope with a femtosecond laser [video]](https://hn.urlbox.com/shots/renders/2026/7/20/a0dffa12-5f97-40f4-8162-de4abedfb27d.jpg)
![Screenshot of youtube.com: Optical diffraction patterns made with a MOPA laser engraving machine [video]](https://hn.urlbox.com/shots/renders/2025/10/20/26d2d622-e56d-4ac3-861c-9122f1b351cd.jpg)
First screen, captured .
Looks similar
![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.
Microscopes can see video on a laserdisc(youtube.com)
590 points by zdw | 82 comments
YouTube video from Tech Tangents using an Andonstar AD246S-P digital microscope to view the video signal encoded on a LaserDisc.
![Screenshot of youtube.com: Time is an illusion, and these physicists say they know how it works [video]](https://hn.urlbox.com/shots/renders/2024/8/7/5536ca8c-48af-4421-953a-d5794957bdd1.jpg)
![Screenshot of youtube.com: Self-supervised learning, JEPA, world models, and the future of AI [video]](https://hn.urlbox.com/shots/renders/2025/10/3/8112956d-6616-454e-a6de-289ae7860b1c.jpg)