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knolan

2,705 karma · joined June 4, 2017

Lecturer in fluid mechanics and former Bell Labs.
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knolan··on Apple releases Depth Pro, an AI model that rewrites the rules of 3D vision
https://huggingface.co/spaces/akhaliq/depth-pro
knolan··on Show HN: CNC Microscopy for Fun
See also the EnderScope:

https://royalsocietypublishing.org/doi/10.1098/rsta.2023.021...

https://github.com/Pickering-Lab/EnderScope

knolan··on LG and Samsung are making TV screens disappear
Similar but with an Apple TV. It’s seriously one of Apple’s best products.
knolan··on Overleaf: An open-source online real-time collaborative LaTeX editor
A lot of our students use Overleaf, I’ve never seen the point; especially now that most of their thesis documents no longer compile on the free tier.

I suggested one my students simply install LaTeX and he went down some Docker rabbit hole a fellow class mate sent him. Students do love to over complicate things.

knolan··on Serious Sam handled massive amounts of enemies on 56k modem connections
I think it was a playful rhetorical question.
knolan··on A man ordered to hide his boat painted the boat on his fence
I grew up in rural Ireland, you’re not wrong.
knolan··on A man ordered to hide his boat painted the boat on his fence
You can straight up murder someone with a car in Ireland and get away with it.

Footpath parking makes me unreasonably angry.

knolan··on A man ordered to hide his boat painted the boat on his fence
Ireland being carbrained is an understatement. I have neighbours who will drive to the local Lidl which is _in_ the housing estate. I cycle or bus to work and you see so many motorists glued to their phones. Just awful attitudes because of their addiction to their cars and their phones.
knolan··on A man ordered to hide his boat painted the boat on his fence
Fortunately our Urban Arrow fits down the side of my house.
knolan··on A man ordered to hide his boat painted the boat on his fence
It’s easy to laugh at the silly US HOA stories but here in Ireland (and the UK) people have had similar issues with building bike storage units in front of their homes.

https://www.irishtimes.com/ireland/housing-planning/2023/06/...

https://road.cc/content/news/cyclist-threatened-ps11-million...

https://dublininquirer.com/2023/05/24/while-cracking-down-on...

knolan··on Most of Europe is glowing pink under the aurora
Tripod. Long exposure and keep ISO lowish. You may need to manually focus as there won’t be a clear object to focus on.

Shoot RAW and you can tweak the image better to pull down the brightness of the sky to help the colours stand out.

knolan··on Is the frequency domain a real place?
Fourier optics. This is also how Schlieren works.
knolan··on What's that touchscreen in my room?
Most people in the UK don’t have a garage. Almost every home I’ve lived in has had a gas boiler somewhere inside.
knolan··on Apple's Scary Fast event could spell the end of its Lightning port
It’s already been updated to a USB C version.

https://www.apple.com/uk/shop/product/MNC73Z/A/siri-remote?f...

knolan··on ChatGPT can now search the web in real time
You enable it in settings then turn it on from the GPT 4 menu like when you enable a plugin.
knolan··on A simple way to test the charge level on alkaline batteries (2015) [video]
Welcome to the biggest scam in science. Research funded by the taxpayer, peer reviewed for free by other scientists in a journal run by volunteer editors all to be hosted as a PDF for massive profit by a ‘prestigious’ journal.
knolan··on GPT Unicorn has drawn a unicorn
I’ve asked ChatGPT to create models using Blender’s Python API. It typically generates working code. The API has been updated since 2021 so it’s expected that things might break.

It mostly just arranges simple spheres and cylinders. You can have it label parts which are usually correct.

It struggles with the orientation of things so if you ask it to model a plane the engine nacelles are oriented the wrong way but correctly positioned.

knolan··on A self-driving Uber killed a woman. The backup driver pleaded guilty
It seems that if you want to murder someone and get away with it you should do it in a car.
knolan··on Pixar, Adobe, Apple, Autodesk, and Nvidia form alliance for OpenUSD
I’ve been happy with what modelviewer.dev offers me; someone with very little experience with 3D on the web. It’s basically a wrapper for three.js to view glTF files quickly and easily. It lets me load very small files and interact with them with JavaScript.

It’s perfect for my needs as an educator and I know just enough to be able to show other educators how to create and deploy their own learning materials.

knolan··on Entropy: A little understood concept in physics [video]
Exergy
knolan··on The rule says, “No vehicles in the park”
In the olden days of internet forums we would consider this type of thing rules lawyering [1]. The rules were put in place to protect the community from trouble makers and trolls.

The main forum I frequented has a dispute resolution area where people could appeal infractions. It was full of people arguing about this type of stuff over something as trivial as a week long ban from some topic forum. Occasionally there would be an over zealous mod too.

Interestingly while the moderation of increasingly large and consolidated online communities becomes more automated and inflexible I’ve noticed that attitudes to rules around our public spaces have eroded into pure selfishness.

It seems there is nowhere people won’t drive and abandon their cars. Cycle tracks, footpaths (sidewalks) grass verges, parks, playing fields etc. it seems that this is simply accepted.

I’ve seen police and private security lazily patrol around parks where vehicles are not allowed in their cars. There’s no appetite for a physical on foot presence. You rarely see police on the street. The exception was during Biden’s recent visit to Dublin, there was literally a Garda on every street corner for a week.

Our local sports club patrons abandon their cars all over the grass area at the entrance to the local park when there is a half full car park right across the road.

Outside our local supermarket people will leave their cars on the footpath outside the store rather than park in a space mere metres away.

All of this is confounded by a police force (Irish Gardai) that don’t seem to give a damn.

I argued with a guy on Thursday who drove down a segregated cycle lane and up onto the footpath so he could leave his car right outside the house he was visiting. He saw nothing wrong with it. Only when I pointed out the kids trying to get around his car did he finally show some shame for his behaviour. I was furious.

Car brain is a growing problem.

[1] https://en.m.wikipedia.org/wiki/Rules_lawyer

knolan··on Display brighter-than-white color on Apple devices
This will happen with any video recorded in HDR, on iPhone 12 and later for example. You see it all the time on Reddit, YouTube etc.

It probably isn’t anything Facebook is doing.

knolan··on Apple previews Live Speech, Personal Voice, and more new accessibility features
I’ve just set a white wallpaper on my iPad and the clock and date are displayed as block on white. On my dark wallpaper the clock and date are displayed inverted as white. This works with dark or light mode also with background dimming on or off.
knolan··on Google Earth 3D Models Now Available as Open Standard (GlTF)
You can convert glTF to USDZ in their Reality Converter app.
knolan··on Apple brings Final Cut Pro and Logic Pro to iPad
Airdrop was amazing when it first came out with MacOS. It really just worked. Our lab of mostly Mac users stopped using USB drives to share stuff.

Then they released a new version of it to be compatible with iOS and enable all the continuity and handoff stuff. Then all the problems started. It simply wouldn’t work. Devices couldn’t be discovered, files couldn’t be sent. Handoff would eat half written emails. The problem was due to the replacement of mDNSresponder with discoveryd which they eventually rolled back.

In fairness it’s been fixed for some time now and I’ve got no more problems with it.

knolan··on I'm never investing in Google's smart home ecosystem again
No, but the hardware was neat.
knolan··on I'm never investing in Google's smart home ecosystem again
I love my Time Capsule. It worked flawlessly for a nearly a decade when the disk inevitably failed.

I still use it in my office for backups with a new disk. I wish Apple still made them and made swapping disks tool free.

knolan··on Even Apple employees hate Siri and are skeptical of its future, new report says
I’ve a problem with setting scenes with a timer that it often asks who I am. Which is odd because it will identify me just fine normally.

It usually goes like this:

Me: Hey Siri, “bedroom on” in 15 minutes.

Siri: who is speaking?

Me: $Name

Siri: I don’t recognise your voice… setup personal requests bla bla.

Me: Hey Siri, who am I?

Siri: You’re $Name!

Me: Hey Siri “Bedroom on” in 15 minutes.

Siri: Who’s Speaking?

Me: @%#+#!!!

Siri then goes into a loop asking who I am and then ends with “Hi!”

Five minutes later,

Me: Hey Siri, “Bedroom on” in 10 minutes.

Siri: okay $Name I’ve set bedroom on for 12:08.

So it’s not the voice recognition, it’s whatever’s going on after that step.

knolan··on Even Apple employees hate Siri and are skeptical of its future, new report says
I’ve noticed that the whole the voice to text recognition it pretty good, what’s awful is how that text is interpreted. You see the same problems with search in other Apple services.

For example you might search for a street in maps and search will just give up and just give you a half arsed result. Searching for HN Boulevard might instead HN Avenue even though you can see the correct result right there on the map.

You see similar behaviour in Music, App Store etc.

knolan··on Reroom AI: Test interior design ideas and styles before hiring a designer
Just for fun I uploaded a screenshot from Cyberpunk 2077 because I was trying out the new path tracing update.

https://imgur.com/a/UpD9kHs

It’s fun to see how it deals with UI elements.

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