Matti Aronen
Harry SintonenAlphaPhoenix's video about the home-built 2 billion fps camera is one of the coolest videos for a long time. The premise is so simple that anyone (even people without degrees) can follow and understand it. Educational and cool as heck!
YouTube
Cavyherd@cavyherd The method is simple and brilliant. It has some limitations on the scenes it can record due to the way it works, of course:
- The event must be repeatable, so the setup must stay static. the laser is toggled on/off a lot here.
- The angle and direction of the laser must be known in order to be able to compensate for the delays introduced due to light having to travel a longer distance.
- The scene must be entirely dark other than the laser introduced (due to sensitivity of the sensor).
...but it still feels like it violates the laws of physics, somehow....
::suspicious squint:: ::hairy eyeball::
vandorb12@cavyherd @harrysintonen yeah, we're at the bleeding edges of physics with this video. Femtoseconds is getting into wibbly-wobbly timey-wimey stuff territory.
I don't speak any but the most superficial conversational physics, but ISTM at that those time scales, one ought to start detecting quantum effects.
Rexx Deane 🏳️🌈@harrysintonen I had a gut instinct that I knew what was happening with relation to actually 'seeing' the light as it travelled with respect to us seeing the bounces from droplets, but it was great to see it explained in such detail so understandable.