aurelwu (u/aurelwu) - Readit News

aurelwu commented on Cherry gives up German production and wants to sell core division heise.de/en/news/Cherry-g... · Posted by u/jsheard

Phil_Latio · a month ago

It's just one piece of the puzzle. The cost for Co2 certificates is a more major reason. Starting 2027, hedge funds can buy these certificates which will be the nail in the coffin. It's basically Bitcoin on steroids with the difference that people buy Bitcoin out of free will, while the industry is forced to buy these certificates which get more scarce over time.

aurelwu · a month ago

Anyone can already buy those certificates - but as its an artificial market where rules can be changed politically it's actually way more resistant to such things than regular markets, so if those hedge funds feel like they want to lose some billions they can certainly do that. There is a large enough stockpile of certificates + leeway when to submit them that any short term market squeeze will just be dealt with politically.

aurelwu commented on 'World Models,' an old idea in AI, mount a comeback quantamagazine.org/world-... · Posted by u/warrenm

mym1990 · 4 months ago

For whatever its worth, I bet the chess master would be able to instantly identify that it is a random/invalid board position, aka an invalid world state. I think the experiment you are alluding to gave both groups a very limited amount of time to look at the board. Given enough time, both groups would definitely be able to memorize 64 pieces on a board.

aurelwu · 4 months ago

I do think even the most amateur of amateurs would be able to recognize instantly that a chess board with 64 pieces on it is a invalid game state.

aurelwu commented on Show HN: Air Lab – A portable and open air quality measuring device networkedartifacts.com/ai... · Posted by u/256dpi

bflesch · 7 months ago

Nice device, but too playful for my needs. I'm still looking for a good sensor like Aranet but without the display and the vendor lock-in. Maybe if display is removed from this one it would work?

aurelwu · 7 months ago

you can get a ESP32 and a CO2-Sensor, easiest would be to use a development kit like a m5-stickC and the Sensirion SCD41 and with some small arduino scripts you are good to go to send the data via WLAN or BLE for something like 70€. Can be even cheaper if you don't use a development kit but it makes things a lot easier and the small display helps with debugging.

aurelwu commented on Show HN: Air Lab – A portable and open air quality measuring device networkedartifacts.com/ai... · Posted by u/256dpi

aurelwu · 7 months ago

Hi, I developed indoorco2map.com which is a an app-supported crowd-data-science project where users can submit CO2-Data they measure when going shopping or to restaurants or wherever using a simple-to-use App. I'd like to support your Device - is there documentation available about how to read the Data via BLE? All I need is the CO2-History (either with timestamp, or just ordered + information about update interval).
MIT Licensed: https://github.com/AurelWu/IndoorCO2AppMAUI

PS: do you use the air pressure to correct the CO2-readings like the Aranet4 does or would users need to manually recalibrate when the move to higher/lower elevations compared to when the sensor was calibrated?

Posted by u/aurelwu 8 months ago

Show HN: A crowd-data collection Project about Indoor Air Quality (CO2)indoorco2map.com/...

aurelwu commented on Varda Capsule Reentry – Five Minutes from LEO to Earth [video] youtube.com/watch?v=qw4Ds... · Posted by u/enderfusion

pineaux · 2 years ago

This is in the correct ballpark. But 0.9c is crazy fast. [Expanse spoiler alert]

I love how they use this mechanic for storytelling in "The Expanse". The rebels of the belt threaten earth by slinging rocks at it at really high speed. Seems a very realistic way of interplanetary war. Why not bend some fast moving rocks to your enemy?

aurelwu · 2 years ago

I don't know if it's been the first time in fiction where that concept was described but in Heinleins "The Moon is a harsh Mistress" this was what the Moon Colonists did.

aurelwu commented on I realized chess pieces can be redesigned to be geometric attack directions twitter.com/graycrawford/... · Posted by u/aa_is_op

infogulch · 2 years ago

For me the most surprising observation from this thread is this tweet [1] showing that the knight's moves are exactly the squares that the queen can't get to within a 2 square manhattan distance.

I.e. the knight is an anti-queen.

[1]: https://twitter.com/skidbladnirr_/status/1750285122769957129

aurelwu · 2 years ago

Some non-orthodox chess variants have a piece which combines Queen+Knight: https://en.wikipedia.org/wiki/Amazon_(chess)

very old variants often had such compound pieces like for example: https://en.wikipedia.org/wiki/Grant_Acedrex

aurelwu commented on First new U.S. nuclear reactor since 2016 is now in operation eia.gov/todayinenergy/det... · Posted by u/ano-ther

Turing_Machine · 2 years ago

China is building nuclear reactors faster than any other country.

At the moment, they have 21 new reactors under construction.

aurelwu · 2 years ago

21 reactors under construction even with a short build time of 7 years is just 3 finished per year, and with China having ~15x the population of Germany that would amount to 0,2 reactors finishing per year in Germany. Multiplied with 1,4 GW that would add ~0,3 GW capacity resulting in about 2,5 TWh additional electricity generated per year which is 0,5% of annual current german demand. Do that for 20 years and you'd be at 10% of current electricity demand or about 5-7% of the demand in 20 years from now - or in other words micro-optimisation.

aurelwu commented on Swedish dockworkers are refusing to unload Teslas at ports in broad boycott move text.npr.org/1213157550... · Posted by u/rntn

orangepurple · 2 years ago

Unions span across corporations within business sectors whereas corporate boards do not.

aurelwu · 2 years ago

Business associations do however.

aurelwu commented on Nuclear fission fuel is inexhaustible (2022) scanalyst.fourmilab.ch/t/... · Posted by u/mutant_glofish

polotics · 2 years ago

This chart distresses me: solar at 0.9 is only about a third of petroleum at 36. It is making it look like new renewable (ie non-hyrdo) are a lot more sizeable than they really are. From Lawrence Livermore this is hard to swallow. If the boxes sizes are on a weird logarithmic scale, then this should be explicit in the legend.

aurelwu · 2 years ago

the lines are what shows the energy amount, the boxes have a minimal size for readability and are acting as the legend of the chart.

u/aurelwu

KarmaCake day257July 31, 2018View Original