7 ms·
Lightning captured at 7,207 images per second
- Kiro 14y agoA video that went viral 5 years ago pops up on HN three times in two days. What's up?
- deleted 14y ago[deleted]
- lucaspiller 14y agoSomething to do with the alignment of mars, the earth and the moon I think...
- scottmey 14y agoCould have something to do with the intensity of the storm we experienced here in NYC yesterday.... http://www.travelerstoday.com/articles/2357/20120718/nyc-storm-july-18-2012-amazing-thunderstorm.htm http://www.travelerstoday.com/articles/2357/20120718/nyc-sto...
- reustle 14y agoEvery time I see that picture it makes me hate Instagram a little bit more.
- thisisblurry 14y agoAny reason in particular for that? Seems a bit harsh.
- sp332 14y agoIt removes all the fine features from the funnel, most of the color and contrast information, and shrinks the resolution. It made this photo worse in every way.
- thisisblurry 14y agoTo be fair, that image wouldn't exist (nor would we be having this discussion) otherwise as it wouldn't have been published to Instagram. I can't comment in regards to the photographer's filter preference though...
- sp332 14y agoMaybe the resolution would have been the same. But it's possible to upload a photo in Instagram without stopping to apply a filter, isn't it?
- thisisblurry 14y agoNope, you can go sans filter. It's actually the first option - you have to scroll past it to get to the modifying filters. You can see it in step 2 here: http://help.instagram.com/customer/portal/articles/168150-taking-and-sharing-photos-on-instagram http://help.instagram.com/customer/portal/articles/168150-ta...
- reustle 14y agoThis photo would have been incredible without the filters. Without Instagram, applying filters to every photo wouldn't be becoming the norm.
- mhurron 14y agoYa, is there a clean version of that picture somewhere?
- jaekwon 14y agoHoly bolts, that looks like the source of the lightning is doing a distributed spatial breadth search of the potential space looking for a connection for the main jolt (the action potential event). Could this be what the brain is doing? A group of neurons get excited (some concept or thought), and a distributed spatial search happens electrically starting at the source of excitation (literally brainstorming), until it finds the best pathway to connect to "ground" (reasoning), at which point the pathways between "source" and "ground" stay continuously excited for a measurable period of time (the ephiphany moment, learning is happening via hebbian). "Ground" is whatever that causes the source energy to drain, such as the epiphany of a solution, which makes the solution appear obvious.
- rplnt 14y agoAbout tthe first paragraph, that's exactly what it is doing. > These electrons are zigzagging through the air as they meet paths of easier passage through the air--paths with a lower dielectric strength. Each stroke of a lightning strike is usually about 50 m (150 ft) long and lasts about 1 to 2 microseconds with a pause of about 50 microseconds before resuming another stroke in a slightly or significantly different direction. http://en.wikipedia.org/wiki/Lightning#A_typical_Lightning_Strike http://en.wikipedia.org/wiki/Lightning#A_typical_Lightning_S...
- ionforce 14y agoI like your theory. Now if only a neurologist could chime and and confirm!
- jaekwon 14y agohttp://www.wired.com/wiredscience/2012/07/unlock-inner-savant/ http://www.wired.com/wiredscience/2012/07/unlock-inner-savan...
- lnanek2 14y agoIf you have a bunch of neurons with different thresholds to trigger their action potentials, then you slowly raise the amount of activity sent to them equally, then the lowest one is going to trigger first. I guess you could call it a search.
- drstrangevibes 14y agoso interesting , I thought about distrubuted search, the first thing that struck me was that it was a monte carlo method of search(i.e. search with some random element). Its amazing how once a solution is found it is stuck to despite the potential for optimisation, the loop at the top.,
- polyfractal 14y agoMore (awesome) videos can be found at the original Vimeo page: http://vimeo.com/ztresearch/videos http://vimeo.com/ztresearch/videos (Why link to that blog? It offered nothing extra to the videos)
- thisisblurry 14y agoOr, if you want to go a level deeper, go to the video poster's own site: http://www.ztresearch.com/ http://www.ztresearch.com/
- perlgeek 14y agoThis says "Any use requires licensing via [...]", and yet the web page doesn't indicate that it obtained any such license. So, is this illegally copied material on the top 1 spot of HN?
- perlgeek 14y agoNo replies, just downvotes on an honest question. Can somebody please answer and enlighten me? Thanks.
- DanielRibeiro 14y agoFormer discussion (the links is now dead) from last week: http://news.ycombinator.com/item?id=4247484 http://news.ycombinator.com/item?id=4247484
- WillyF 14y agoI was almost hit by lightning a few months ago. My Dad and I were on a fly fishing trip with a guide in a long canoe-like boat on a river. When the storm came up behind us, we pulled to the side of the river and took cover under the branches of some small overhanging trees. I wasn't very concerned, as the storm wasn't all that big and I'd been in similar situations before. When it started hailing, I became a bit more worried, but I was still reasonably relaxed. Then I saw an extremely bright flash, screamed, and ducked. My Dad and my guide never heard the scream because the thunder was instant. It took me a few seconds, but I turned around to see if they were ok. They were, and they asked me if I saw where it was. I said that I just knew that it was close. They told me that it was about 3 feet to my right, and it hit the water (my Dad said he saw a hole in the water). I definitely felt something from it, but I can't really describe what it was. I'd pay a lot of money to be able to see a video like this of that strike. I'm pretty lucky to be alive/not disabled for life. Don't let your misconceptions about lightning put you in a similar situation. Read NOAA's guide on lightning safety: http://www.lightningsafety.noaa.gov/ http://www.lightningsafety.noaa.gov/
- jeremyarussell 14y agoNikola Tesla would have loved being alive with today's camera technology.
- dclowd9901 14y agoI get the impression he knew what was going on without the cameras.
- jeremyarussell 14y agoI think that goes without saying, the point being that it's still amazing to see it with the high speed camera.
- noahc 14y agoDoes anyone know how close prosumer/off the shelf technology can get to reproducing this? I've seen 1000fps on prosumer cameras, before, but are we close to 5,000 even on sub-$1000 cameras?
- colanderman 14y agoI bet you could do it with 5 1000fps cameras and some software trickery. The algorithm would likely be very similar to those used for superresolution merging of multiple photographs of the same scene.
- noahc 14y agoI think you're probably right. The biggest problem I see is storage if you hack something together. Not just raw storage, because that is an issue, but how fast you can clear the buffer and get the image to disk.
- ChuckMcM 14y agoI love how once the circuit to ground is established it just pumps power through it until it is fully discharged.