jonah-archive
Joined 10 years ago
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Comment · 26 days ago
see https://news.ycombinator.com/item?id=42705284 for some historic detail on this
Comment · 1 month ago
Our initial announcement!
Internet Archive Seeks Material for Library of Amateur Radio and Communications (Oct 2022) https://news.ycombinator.com/item?id=33089535
Comment · 1 month ago
I haven't made banana peels specifically, but I have made this for some vegan guests before (as part of a larger dish) and while I wouldn't say it's bacon, it hits all the same notes: https://www.seriouseats.com/crispy-smoked-mushroom-bacon-bit...
Comment · 2 months ago
Still very much a thing in the world of optical networking ("rolling the cable", i.e. switching the two sides at one end to match tx/rx up correctly, is a common first step in debugging a link that won't come up -- standard fiber patch cables are effectively crossover cables but when you're running through patch panels, have multiple cables in the path, etc it can end up mismatched). Some plants have primarily switched to bidirectional (bidi) transceivers that transmit and receive on two different wavelengths on the same strand, but that also requires matching optics at the other end with the tx/rx frequencies reversed.
Comment · 5 months ago
This teardown and commentary remains a favorite of mine, really worth reading through: https://blog.bolt.io/juicero/
Comment · 6 months ago
Originally it said:
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The issue has been identified as a DNSSEC signing problem at DENIC, the organization responsible for the .DE top-level domain. Cloudflare has temporarily disabled DNSSEC validation on 1.1.1.1 resolver in order to allow .DE names to continue to resolve. DNSSEC validation will be re-enabled when the signing problems at DENIC are known to have been resolved.
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(and in case it changes again, now it says)
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The issue has been identified as a DNSSEC signing problem at DENIC, the organization responsible for the .DE top-level domain. Cloudflare has temporarily disabled DNSSEC validation for .de domains on 1.1.1.1 resolver (as per RFC 7646) in order to allow .DE names to continue to resolve. DNSSEC validation will be re-enabled when the signing problems at DENIC are known to have been resolved.
See RFC 7646 for more details: https://datatracker.ietf.org/doc/html/rfc7646
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Comment · 6 months ago
Exactly this. Many modern PHYs also integrate 802.3az (energy-efficient ethernet, a subset of Green Ethernet) but it's not super common.
I also finally found this old page of using an old dev board to construct a WoL listener for a mobo that didn't support it -- might be an interesting read for the curious: https://web.archive.org/web/20140525022112/https://hackingbe...
> In this script a fifo is created where the output of tcpdump is dumped. For whatever reason tcpdum | grep was not working properly, and would have a “miss” rate of about 50%. So tcpdump output is dumped in the fifo:
>
> tcpdump -i eth1 2>&1 | tee > /tmp/tcp_wol.fifo &
>
> and it’s grepped in a loop, when the magic packet (see http://en.wikipedia.org/wiki/Wake-on-LAN) is found , a led is triggered, thus powering-up the computer (with a driver and relay, will come back at this).
Comment · 6 months ago
The original paper proposing the technology is actually very good (and surprisingly still online!): https://www.amd.com/content/dam/amd/en/documents/archived-te...
Comment · 7 months ago
The Tailscale client (non-GUI) is open source: https://github.com/tailscale/tailscale
And they collaborate with Headscale to provide an open-source coordination server (with, unsurprisingly, a more limited featureset, but it works fine with their closed-source GUI client): https://tailscale.com/opensource#encouraging-headscale
I use the combination myself and it works quite well, but of course is less convenient than using their product (which I also do in a different context). Overall I'm pretty happy with their open-source stance.
Comment · 8 months ago
I've been thinking about that illustration of Smaug for nearly 40 years and I never knew where it came from (I didn't recall it was from a Tolkien-related thing, but I remember it vividly otherwise)! I must have seen it at a friend's or the library since as far as I know we never had these at home.
Comment · 8 months ago
This someone jogged a memory of an all-time favorite line from a 2005 laptop review (well, more of a rant than a review): https://web.archive.org/web/20090709072628/https://arstechni...
> [The power] light informs the user that the X41 is on—no, really. There should be an ontological indicator next to it to let the user know the computer really exists.
Comment · 9 months ago
The ratio of the length of the diagonal of a pentagon to one of its sides is the golden ratio -- easiest visualization is with similar triangles. Draw a regular pentagon (sides of length 1 for simplicity) and pick a side, make an isosceles triangle with that side as the base and two diagonals meeting at the opposite point. Go one side length down from the opposite point and mark that (F below). Convince yourself that triangle DCF is similar to CAD (symmetry gets you there).
Now we wish to find the length of, say, CA. From similarity CD/CA = FC/DF, and CD = DF = 1, and CA - FC = 1, so the ratio simplifies to... CA^2 - CA - 1 = 0 which yields the golden ratio.
A
.'.
.' | `.
.' | | `.
B.' | | `.E
\ F| | /
\ | | /
\ | | /
\|_____|/
C DComment · 9 months ago
In this lovely paper: https://tom7.org/chess/longest.pdf
The author points out that:
"This rule only applied to games started after its introduction, so it is possible that some pre-1561 games are still in progress and may never end."
jonah AT archive DOT org
https://bsky.app/profile/jonahedwards.com
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