terramex

Is there no way to manufacture more persistent phosphor for white LEDs?

He does not wait for 7 cycles but for 7 iterations of loop taking 5 cycles.

Here's another take at DVD laser scanning microscope from 2 years ago with open source Arduino code and PCB design: http://www.gaudi.ch/GaudiLabs/?page_id=652

Sure, Vivaldi's AdBlocker might not be impacted a lot, but it does not matter because it is terrible anyway and it triggers every "adblock detection script" I've ever seen. While I like rest of the browser it is unusable without customised uBlock Origin.

I was hoping some company would fork Chromium before Manifest V3 change and apply patches from mainline as necessary but it seems less and less likely with every day. If Vivaldi manages to patch out Google's changes and keep uBlock working as it is now they will have me as their user until heat death of the universe.

95% from music playlists I follow on Spotify. Check "Discovered on" section on your favourite artist page, look for playlists that seem to align with your taste. Avoid official Spotify playlists and look for ones created by actual people.

Also "Right Now" playlist from Ryan Schreiber (Pitchfork's founder) if you're into that style. Try looking for playlists created by music journalists you enjoy.

Algorithmic recommendations never worked for me.

Shazam is great but a similar app that really "wowed" me around 2007 was Midomi - it could recognise humming with good results, even though I'm really bad at hitting right notes and key. It still exist but is not really talked about anymore, Shazam seems to have dominated that market.

@dang posts it from time to time, I think this is most recent one: https://news.ycombinator.com/item?id=28479595

Last month HN had issues with SSD's suddenly dying after 40000 hours and moved to AWS temporarily: https://news.ycombinator.com/item?id=32031639

I have converted my old Beyer Dynamic DT 770 to Bluetooth [1] and used them daily for past 6 months and I recommend this BT module over what is listed on that website: https://www.gotronik.pl/odbiornik-bluetooth-50-audio-aptxll-...

It has 5V stepdown converter and Li-Po charger as well as amplifier integrated on board. Cheap USB-C Li-Po chargers lack neccessary 5.1kOhm pull-downs and therefore work only with USB-A->USB-C cables. Soldering them onto charger PCB is borderline impossible, while adding them to most USB-C sockets is fairly easy (usually there are free pads to solder 5.1k SMD resistor). You then connect 5V and GND from USB-C socket to BT module and it handles charging the battery that is connected to separate pads.

I don't really understand why article recommends board without amplifier, I tried using CSR8675 board without one and it was waaay too quiet.

With 500mAh battery salvaged from old BT speaker I get over 20h of loud playback, which is fine for me.

[1] https://www.reddit.com/r/headphones/comments/r32ru2/yet_anot...

> For a short summary, the basic problem is that rail infrastructure is paid for by national funds

EU co-founded projects can be forced to operate only domestically too. For example polish high speed railways: https://en.wikipedia.org/wiki/Pendolino#Poland

> certification for international operation is not seen as a priority, as the trains are restricted to domestic services for an initial 10 years under the terms of a grant from the EU Cohesion Fund which covered 22% of the project cost.[31]

My M1 with thermal pad backside under heavy load gets to maximum 46°C compared to 37°C before. Everything above 42°C is uncomfortable on lap but it is not an issue for me at all as every time I need to run heavy load for long I'll be at my desk.

Tor Project recommends using Onion Browser in iOS: https://support.torproject.org/tormobile/tormobile-3/

> Can I run Tor Browser on an iOS device?

> We recommend an iOS app called Onion Browser, which is open source, uses Tor routing, and is developed by someone who works closely with the Tor Project. However, Apple requires browsers on iOS to use something called Webkit, which prevents Onion Browser from having the same privacy protections as Tor Browser.

And here is old post (2016) about it on Tor Project blog: https://blog.torproject.org/tor-heart-onion-browser-and-more...

I checked and it looks like Mike Tigas is a Tor Project core member, he is listed here as author of iOS Onion Browser: https://www.torproject.org/about/people/#core

Safari has its own, built-in implementation of that called Live Text since last year. Just try highlighting any text in the image and voila - it works.

https://support.apple.com/en-au/guide/preview/prvw625a5b2c/m...

> Will android apps be allowed continued access to this API?

Yes, WeatherKit site mentions that "REST APIs can be used for websites and other platforms."

https://developer.apple.com/weatherkit/get-started/

Windows 10/11 ARM currently only work in virtual machines, Apple does not provide ARM drivers for Windows like they did for Intel editions.

For Air too: https://www.apple.com/macbook-air-m2/specs/

> Configurable to: 16GB or 24GB

Store is updated too, 16GB upgrade is 200$ and 24GB is 400$.

> Simultaneously supports full native resolution on the built-in display at 1 billion colors and:

> One external display with up to 6K resolution at 60Hz

https://www.apple.com/macbook-air-m2/specs/

M2 slide said that it supports up to 24GB memory. No Air configs were announced yet, but I'd guess it will be sold with up to full supported amount.

It is, you get USB-C - > Magsafe cable in the box and can use it with every USB-C charger and of course still can charge over normal USB-C if you left Magsafe cable at home.

According to Verge it uses Kailh Choc V2 Low Profile Switches: https://kono.store/products/kailh-choc-mx-switches

Also Logitech's propertiary dongle is not necessary, it can use Bluetooth.

https://www.theverge.com/2022/5/24/23137797/logitech-mx-mast...

It is possible in principle, but gets harder as wavelength of captured light gets smaller and so far it is done only for long radio waves on planet scale.

https://en.wikipedia.org/wiki/Astronomical_optical_interfero... https://en.wikipedia.org/wiki/Aperture_synthesis

Linus from LTT YouTube channel tested it and it works: https://www.youtube.com/watch?v=E75mtGjDRRI&t=1502s

It required significant force to disconnect it first time but then it goes out and in as expected.

It was fascinating read at peculiar time in my life and it made the whole experience much more memorable. I would love to re-read it in few years.

In some park in Santa Cruz, I don't remember the name as I was there only for 1 day.

I was laying on grass in Tenerife reading R.A.W.'s "Prometheus Rising" when I saw big white circular object in the sky. It was quite big, moving in zig-zag pattern for several minutes and then became smaller and disappeared. I recorded a video with phone but it was your typical 'ufo' recording - shaky white small dot with autofocus missing all the time. The phone unexpectedly turned off and died few weeks later before I transferred video anywhere.

The lesson was to backup my phone as I do with PC and never buy Samsung again.

It preceeds this news, I've seen original post translated into polish two days ago.

edit: here https://www.wykop.pl/wpis/64199473/translator-z-rosyjskiego-... and this was given as original source: https://t.me/Tsaplienko/1785 (last edited: Mar 4 at 18:29)

Dyson sphere would emit significant amount of infrared light but no visible light. Original Freeman Dyson's paper from 1960 was titled "Search for Artificial Stellar Sources of Infrared Radiation" https://sci-hub.ee/10.1126/science.131.3414.1667

I'm surprised that so many comments talk about "too many draws in classical chess problem" as just yesterday we just finished Tata Steel that was a terrific tournament with plenty of decisive games (84 out of 182) and even most of the draws were thrilling games. During commentary, GM Naroditsky mentioned that he asked past World Champions Anand and Topalov about influence of Magnus Carlsen on the game and both responded with "people have stoped offering draws in many different types of positions where 10-15 year ago they would shake hands and go home" [1]. Additionally modern computer analyses show that even dead drawn positions can be won if opponent makes slightest inaccuracy and players do try to capitalise on that often.

Maybe World Championship matches format needs some tweaking. Draws are much more common there as losing one game can easily mean losing whole match and players are extra cautious.

[1] https://www.youtube.com/watch?v=sK2IWnOfFuY

The biggest surprise for me is that organ transplant from animals had been attempted in the past, I was sure it had not been done yet.

Apparently there was a newborn that lived for 21 days with baboon heart in 1984: https://en.wikipedia.org/wiki/Baby_Fae

Wikipedia ( https://en.wikipedia.org/wiki/Xenotransplantation ) also lists one successful kidney transplant from chimpanzee in 1964:

> Out of 13 such transplants performed by Keith Reemtsma, one kidney recipient lived for 9 months, returning to work as a schoolteacher. At autopsy, the chimpanzee kidneys appeared normal and showed no signs of acute or chronic rejection.

Quantum efficiency is a ratio of how many electrons are created from typical photon hitting a detector. For optical instruments max value is 100% and is the ultimate reference - every photon gets converted into electrical signal. This is why order of magnitude improvements are not expected to happen - there are physical limits on how much signal can be generated from certain amount of light. Solar cells for generating electricity may go over 100% because high energy photons can be converted into 2 electrons but this is undesirable for optical imaging and light will pass through narrowband filters before hitting detector to filter out such photons as they would skew results.

Nancy Grace Roman Telescope to be launched in 2027 is expected to have 75-95% QE for near infrared compared to 70-90% for JWST: https://roman.gsfc.nasa.gov/science/WFI_technical.html

Last upgrade to Hubble near-IR instrument in 2009 (WFC3) has about 75% QE: https://www.researchgate.net/profile/Bernard-Rauscher/public...

Is it simplified model, real life detectors have more parameters regarding noise and persistence but all produced in past 20 years are close to theoretical limits.