thatcherc
Joined 10 years ago
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1,173
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228
Member since
May 17
Recent submissions
Comment · 1 month ago
This looks fantastic! The table and formula extraction features are especially interesting. My immediate question is: can this be integrated into Zotero? Most of the PDFs I read are research papers and extracting tables and formulas directly from my zotero collection would be super handy.
Comment · 1 month ago
Can you explain that one (the logarithm trick)? I have no idea what it's trying do to. Is it saying that it's convenient or useful to know the order of magnitude of a number rather than its value?
Comment · 3 months ago
It's weird to see a new vehicle announced like this that's not an EV. I wonder what it's like launching a gas truck when new battery-powered trucks are looming in the distance (or already here).
Comment · 7 months ago
Link to the paper: https://www.nature.com/articles/s41377-025-02119-y
From the abstract:
> Here, we demonstrate a covert communications method in which photon emission is rapidly electrically modulated both above and below the level of a passive blackbody at the emitter temperature. The time-averaged emission can be designed to be identical to the thermal background, realizing communications with zero optical signature for detectors with bandwidth lower than the modulation frequency
It sounds like maybe they're modulating the emissivity of a diode up and down so that over time, its IR spectrum looks like black body radiation. Only someone looking at the intensity of the thermal radiation coming from the diode at really fast timescales (kilohertz or megahertz) would notice that there was a signal being transmitted.
Comment · 7 months ago
This looks great! I've been using ThumbsUp[1] for a similar purpose (creating a gallery of photos I can push S3), but adding album and photo captions required some un-ergonomical tricks. I'll try this out!
Comment · 9 months ago
Comment · 10 months ago
You might have been thinking of https://earth.nullschool.net/
Comment · 11 months ago
I appreciated the Pluto.jl mention! Going from Pluto notebooks that understand data flow to Jupyter notebooks where you have to tell the computer which order to run the cells in is always baffling to me. Why doesn't Jupyter know the run order and dependencies already? The way Pluto handles dependencies between code cells is really just so nice.
Comment · 1 year ago
Kinda weird - Coolify doesn't come up except in the first and last paragraphs. Seems like the page is incomplete or just mis-titled.
Comment · 1 year ago
Yup, slight mix-up. Gravity waves are waves in the ocean and atmosphere (or other fluid bodies) where Earth's gravity is the restoring forces that causes wave propagation. Gravitational waves are the waves in spacetime caused by powerful astronomical events like black hole mergers.
Comment · 1 year ago
Cool! It looks like the Wansview Q5 has a similar SoC/camera/wireless setup as the Wansview W7, which as an installer guide on the Thingino wiki [1]. I wonder if that same installation process (but with the q5 firmware) would work. For $16 I'm inclined to try it out.
[1] - https://github.com/wltechblog/thingino-installers/tree/main/...
Comment · 1 year ago
Thanks! The author's blog is a great find as well - https://www.dm5tt.de/
Comment · 1 year ago
> The analog ones are easy to play with. You just need a DAC to drive their VCO and then can sample the I/Q pins with an ADC
Do you have any reference or notes on how to access the IQ pins on one of these devices (ideally one of the FMCW ones)? I've been wanting to play around with one of these 24 GHz or 60 GHz units for coherent radar but it seems like most of the boards only report on distances over serial links. If there's an easy way to tap into the analog IF signal after down conversion I'd love to see how to do that!