HNHacker News
TopNewBestAskShowJobs

xingyzt

1,008 karma · joined November 28, 2019

Xing Liu, cosmology student, dabbles in web dev

https://xingyzt.net, https://github.com/xingyzt

submissionscomments
xingyzt··on Show HN: LA Wildfire Satellite Analysis
Maybe because FIRMS uses data from satellites in polar orbits, which only pass over the area once every few hours? With choosing near-Earth polar vs. farther geostationary orbits there's a tradeoff between space and time resolution.
xingyzt··on Show HN: LA Wildfire Satellite Analysis
No, just a student on winter break who got curious why CA Fire's map wasn't showing the up-to-date extent of the Eaton fire. Do they have this kind of heat data?
xingyzt··on Show HN: LA Wildfire Satellite Analysis
No, looks like they're doing a way better job! Thanks for sharing. I was only aware of the GOES sats. Seems like VIIRS is more intended to do this kind of monitoring.
xingyzt··on Ryugu samples reveal traces of rock from before the Sun existed
It's accurate. Stellar winds are the primary driver of mass loss for stars near the end of their lives. Asymptotic red giants have extremely voluminous and sparse atmospheres very loosely bound by gravity; any excess radiation pressure would create an instability and blow away portions of the outer envelope. Eventually this exposes a dense, glowing carbon/oxygen/neon core surrounded by a fraction of the original atmosphere (exact composition varies), which we call a white dwarf.

Further reading: Ch. 13, Carroll & Ostlie, Introduction to Modern Astrophysics

xingyzt··on Einstein's Philosophy of Science (2019)
I swear submitted this post last night but now it shows I did it two hours ago? Spooky
xingyzt··on First space images captured by balloon-borne telescope
radius vs diameter
xingyzt··on First space images captured by balloon-borne telescope
According to the description of this NASA image [1], they flew a 7-million-cubic-feet super-pressure balloon in 2009. Approximating as a perfect sphere, that's around 120 feet in radius / 80 yards in diameter. And "When development ends, NASA will have a 22 million-cubic-foot balloon", which is around 170 feet in radius / 110 yards in diameter. These things also look squashed when inflated [2], so they're probably even wider horizontally. Basically, you can fit an entire football field inside along with some stands.

1. https://commons.wikimedia.org/wiki/File:NASA-NSF_super_press...

2. https://commons.wikimedia.org/wiki/File:Super_v_zero_pressur...

xingyzt··on We can't all use AI. Someone has to generate the training data
AI couldn't have started any of the artistic and literary movements, which don't just blend between traditional styles but reject some aspect to forge something new. You can't get AI to generate cubism from training on Victorian art.
xingyzt··on Show HN: Voxel map of my school, made with WebGL and SDF raymarching
Welp. It worked on the school-issued Chromebooks and my friend's Macbook Air but not on iPads or iPhones, so guess I have to test it on more Apple stuff :/
xingyzt··on Spreading rock dust on farms as a climate solution
Newer studies have put doubt to olivine's effectiveness: https://www.technologyreview.com/2022/03/30/1048434/why-usin...
xingyzt··on Creep – a pretty sweet 4px wide pixel font
Can be pulled off with enough context https://i.imgur.com/pXA69Xw.png
xingyzt··on JavaScript Is Weird
Floating bar numbers are an interesting way of giving terminating representations to more commonly used decimals. Each number is essentially a numerator and denominator pair, with some bits to indicate the position of the division bar separating them.

https://iquilezles.org/www/articles/floatingbar/floatingbar....

xingyzt··on Many temptations of an open-source Chrome extension developer
Yeah, when I first shared it in a developer discord server I joked that Microsoft was operating a black market Bing-conversion program. Seems too shady even for Microsoft though. I guess they want me to inject ads/trackers into the results, but I don't see how it's easier with these search engines?
xingyzt··on Many temptations of an open-source Chrome extension developer
Reposting my experience from https://news.ycombinator.com/item?id=27326268:

As a dev of an extension with 10k users I get 3-4 emails a month in my spam which ask me to monetize my extension by secretly changing its users' search engines. My extension is open-source and quite small, but if the change was sneaked in I think most of the users would not notice. I stick to using userscripts for the most part since you can easily check their downloaded source and disable updates.

Example:

Beth Anderson <beth@monetize-extensions.com> Mon 10:58 AM To: Mostly Spam <dev@x-ing.space>

Hello

I am Beth and I am offering monetization for browser extensions, with everything that is going on our team was extremely focused and productive in creating a way to earn revenue on extensions.

We offer to change default search to Bing or Yahoo on your extension which can earn up to $800 a month per 5000 users. This is a premium product by invitation only and can easily be added to your chrome extensions.

You are might curious to know if it is allowed? And I must say that this is completely allowed! Please reply to this email to discuss this further!

Looking forward hearing from you!

Beth Anderson

Business Development Manager

xingyzt··on Abolish High School (2015)
Is it geofenced? Not paywalled for me.
xingyzt··on Using fake reviews to find dangerous extensions
Can confirm. As a dev of an extension with 10k users I get 3-4 emails a month in my spam which ask me to monetize my extension by secretly changing its users' search engines. My extension is open-source and quite small, but if the change was sneaked in I think most of the users would not notice. I stick to using userscripts for the most part since you can easily check their downloaded source and disable updates.

Example:

Beth Anderson <beth@monetize-extensions.com> Mon 10:58 AM To: Mostly Spam <dev@x-ing.space>

Hello

I am Beth and I am offering monetization for browser extensions, with everything that is going on our team was extremely focused and productive in creating a way to earn revenue on extensions.

We offer to change default search to Bing or Yahoo on your extension which can earn up to $800 a month per 5000 users. This is a premium product by invitation only and can easily be added to your chrome extensions.

You are might curious to know if it is allowed? And I must say that this is completely allowed! Please reply to this email to discuss this further!

Looking forward hearing from you!

Beth Anderson

Business Development Manager

xingyzt··on Facebook takes down (and restores) official page for French town of Bitche
He mentioned some current event keywords which might be the cause. Also, he has more subscribers than any grandmaster's channel as far as I'm aware.
xingyzt··on Facebook takes down (and restores) official page for French town of Bitche
Nowhere in that citation is there concrete support for your claim that these words led to the video being taken down.

> 4:15 But if that's the case, then I'm pretty sure all of my 1800 videos will be taken down, as it's pretty much black against white to the death every video, and I don't think it's supposed to work like that.

xingyzt··on This Music Video Does Not Exist [video]
https://www.thismusicvideodoesnotexist.com/assets/urls.json has about a dozen video IDs
xingyzt··on Manim – an animation engine for explanatory math videos
Yup. https://docs.manim.community/en/v0.4.0/examples.html#threedl...
xingyzt··on Logarithmic Maps of the Universe (2005)
Wow. That feels like living in an O'Neill cylinder.
xingyzt··on Logarithmic Maps of the Universe (2005)
See also https://xkcd.com/482 (2008)
xingyzt··on Building Rich Terminal Dashboards
> They're probably a lot easier for screen-readers, too.

That might be true for more minimal TUIs, but I don't think most screen-readers can handle the multi-paneled ones like OP.

xingyzt··on Don't Mess with Backprop: Doubts about Biologically Plausible Deep Learning
I'm not very familiar with deep learning. How does this compare to the biomimicking Spike Time Dependent Plasticity of spiking neural networks?

https://github.com/Shikhargupta/Spiking-Neural-Network#train...

xingyzt··on Whose Woods Are These? Counter‐Mapping Forest Territories in Indonesia (1995)
Accessible at https://sci-hub.st/https://onlinelibrary.wiley.com/doi/abs/1...
xingyzt··on Over 700k paintings from the Rijksmuseum online copyright free
On clicking through (ex. https://www.rijksmuseum.nl/en/collection/RP-P-OB-697), there's a download button, but it requires you to register an account.
xingyzt··on WebAssembly Studio
The clickable divs should be focusable and have the aria button role. <div tabindex="0" role="button">...</div>
xingyzt··on Comic Mono
See also Comic Code: https://news.ycombinator.com/item?id=20533923
xingyzt··on Olbers' Paradox
You can click to unhighlight. I find it useful for linking to a section of a page without an anchor nearby.
xingyzt··on Longest known exposure photograph ever captured using a beer can
https://solarcan.co.uk/matrix is absolutely beautiful.
Page 1 of 3Next →